Last Updated on March 26, 2026 by Editorial Staff
OSINT verification is the process of confirming whether a finding from open-source research is accurate — by measuring the reliability of the source it came from, comparing it against independent sources, and assigning a confidence level that reflects how well it has been corroborated.
Quick Answer: Verification converts raw OSINT research into reliable intelligence. It works in three steps: apply the source hierarchy to weight each result by the reliability of where it came from, cross-reference findings across independent sources to separate corroborated facts from single-source leads, and assign a confidence level — low, medium, or high — before any finding reaches the output. When sources conflict, the conflict is itself a finding worth investigating rather than a problem to dismiss.
Verification in one sentence: A finding is only as reliable as its weakest uncorroborated source — verify against the highest available tier before treating anything as confirmed.
Verification is what separates OSINT from searching. Searching produces results. Verification determines which results are reliable, which need further investigation, and which should be labeled as unconfirmed leads rather than facts.
⚠️ Legal Notice: OSINT verification uses publicly available information only. The Fair Credit Reporting Act (15 U.S.C. § 1681) governs use of verified findings in employment, housing, or credit decisions — formal screening requires an FCRA-compliant Consumer Reporting Agency and written consent. This guide covers lawful research methods only and does not constitute legal advice.
Why This Guide Is Reliable
inet-investigation.com publishes research-based guides built on primary government sources, investigative practice, and public records law. This article deep-dives Phases 5, 6, and 7 of the 8-Phase OSINT Investigation Framework.
The Complete OSINT System
This article is part of the OSINT process series. Here is how the system connects:
Article What it covers OSINT Tools for Beginners Find data — tools, sources, and foundational concepts OSINT Workflow Structure the investigation — the 8-phase framework OSINT Pivoting Expand the search — follow data connections How to Verify Information Using OSINT Validate findings — source hierarchy, cross-referencing, confidence How to Build an OSINT Report Present results — formats, documentation, findings vs. conclusions OSINT for Advanced Investigators Professional-depth methodology Pivoting produces leads. Verification turns them into findings. Reporting presents those findings. These three phases are sequential — verification cannot begin until pivoting is complete, and reporting cannot begin until verification is complete.
Where This Guide Fits
New to OSINT? Start with OSINT Tools for Beginners for tools and sources, then OSINT Workflow for the full framework.
Familiar with the framework? Pivoting (Phase 4) produces raw results. This article covers what happens next — organizing those results by source reliability, cross-referencing for corroboration, and assigning confidence levels before building the output.
Why Verification Is the Hardest OSINT Skill
Finding information is straightforward. The harder skill — the one that separates reliable OSINT from unreliable guesswork — is knowing what those results are worth.
An address on a people-search aggregator is not the same as an address in a county property deed. A LinkedIn employment claim is not the same as a corporate officer filing in a Secretary of State database. A forum post identifying someone is not the same as a court filing naming them. All four are technically “found” through OSINT. They are not equally reliable, and treating them as if they were produces outputs that cannot be trusted.
The verification phase exists to make this distinction systematic — not intuitive, not case-by-case, but structured and repeatable.
→ Related guide: OSINT Workflow: The 8-Phase Investigation Framework
→ Related guide: OSINT Pivoting: How to Follow Data Connections
The Legal Framework
Law What It Covers Relevance to Verification Fair Credit Reporting Act (FCRA) Governs consumer reporting agencies Verified OSINT findings used for employment or housing require FCRA-compliant process Defamation law Prohibits false statements presented as fact Presenting unverified findings as confirmed creates legal exposure Computer Fraud and Abuse Act (CFAA) Prohibits unauthorized system access Verification must use publicly accessible sources only State privacy laws Vary by jurisdiction Some states restrict compilation and use of personal data Source: FCRA — 15 U.S.C. § 1681 — Cornell LII
Phase 5 — The Source Hierarchy
The OSINT verification systemEvery finding passes through all five steps before reaching the reportVerification workflow🔍 Finding from pivot phaseRaw result — not yet verified, not yet weighted, not yet confidence-scored↓📊 Step 1 — Assign source tierWhat is the highest-tier source supporting this finding? Tier 1–5 determines baseline reliability.↓🔗 Step 2 — Cross-referenceDo independent sources agree? Independence requires different agencies and no shared data origin — not just different display platforms.↓👤 Step 3 — Confirm identityDoes this record refer to your specific subject? Requires ≥2 corroborating identifiers — DOB, address, employer, case detail.↓⚡ Step 4 — Conflict checkNo conflict →Proceed to confidence scoringConflict found →Investigate — conflict is a finding, not a problem to dismiss↓🎚️ Step 5 — Confidence scoreHigh →Tier 1 confirmed + corroborated. Confirmed finding.Medium →Multiple sources, no Tier 1 yet. Corroborated finding.Low →Single source, unverified. Unverified lead — not a confirmed finding.↓📄 Output to reportEach finding enters the report in the correct section — confirmed, corroborated, or unverified lead — never mixed.Source hierarchy — five tiersTier 1 Government recordsCreated for legal or regulatory purposes by government agencies. Independent of the subject’s preferences. The verification anchor.Courts · property deeds · SoS filings · PACER · licensing DBs · voter reg · bankruptcyTier 2 Regulatory recordsCreated under legal disclosure requirements. Maintained by regulatory bodies with enforcement authority.SEC filings · FINRA BrokerCheck · Form 990 · FEC · SAM.gov · state barTier 3 Commercial aggregatorsCompiled from multiple sources. Fast and useful for leads — not authoritative. Verify against Tier 1 before treating as confirmed.BeenVerified · Spokeo · Intelius · TruePeopleSearch · WhitepagesTier 4 Self-reported sourcesCreated and controlled by the subject. Every claim requires Tier 1 or 2 verification before it can be treated as established.LinkedIn · company website · social media bio · résuméTier 5 Anonymous sourcesCannot be cited as supporting any factual claim. Value is in what they suggest to look for in Tier 1–3 systems.Forums · review sites · Reddit · anonymous posts · comment sections⚠️ The independence ruleAn aggregator result and the Tier 1 record it derived from are not two independent sources — they share a common origin. Independence requires different agencies and different data collection methods, not just different display platforms.Core principle: Verification is not about finding agreement — it is about proving independence, reliability, and identity before treating any information as established.Most OSINT errors start here: Treating lower-tier sources as if they carry the same weight as government records. The hierarchy exists to prevent this — not all sources are equal, even when they appear to show the same information.The source hierarchy is the framework for assigning reliability to every result in the investigation. Every piece of information has a source, and every source belongs to a tier. The tier determines how much weight the finding carries — and what additional verification it requires before it can be treated as established.
⚠️ Most OSINT errors start here: Treating lower-tier sources as if they carry the same weight as government records. The hierarchy exists to prevent this — not all sources are equal, even when they appear to show the same information.
The Five Tiers
Tier 1 — Government records (authoritative)
Court filings, property deeds, business registrations, licensing databases, voter registration, bankruptcy filings, SEC disclosures, regulatory agency records.
These records were created for legal or regulatory purposes by government agencies with no stake in any individual’s preferred narrative. They are independently maintained, subject to legal accuracy requirements, and accessible to anyone for verification. A finding confirmed by a Tier 1 source is the strongest form of OSINT corroboration available.
Examples: Travis County District Court case filing · Cook County Recorder deed · Texas Secretary of State business registration · PACER federal court record · FINRA BrokerCheck employment history · IRS Form 990 nonprofit disclosure
Tier 2 — Regulatory and professional records (highly reliable)
SEC filings, FINRA BrokerCheck, professional licensing board records, nonprofit Form 990 disclosures, federal contractor databases (SAM.gov), campaign finance records (FEC).
Maintained by regulatory bodies with enforcement authority and subject to legal disclosure requirements. Created under legal obligation and maintained independently of the subject’s preferences.
Examples: SEC proxy statement (DEF 14A) · State bar association membership record · Medical licensing board record · FINRA BrokerCheck broker employment history
Tier 3 — Commercial aggregators (useful, verify independently)
BeenVerified, Spokeo, Intelius, TruthFinder, Whitepages, TruePeopleSearch.
These tools compile data from multiple sources and aggregate it into searchable profiles. The compilation introduces its own lag times, coverage gaps, and accuracy issues. An address, phone number, or name association from an aggregator is a lead worth following — not a confirmed finding until independently verified against a Tier 1 source.
Key limitation: Aggregators derive their data from primary sources. When an aggregator result and the Tier 1 record it derived from are both cited as supporting a finding, they are not two independent sources — they share a common origin.
Tier 4 — Self-reported digital sources (leads only)
LinkedIn profiles, company websites, social media bios, personal websites, résumés.
Created and controlled by the subject. Every factual claim requires independent verification against Tier 1 or Tier 2 sources before it can be treated as established. A LinkedIn employment claim confirmed by a Secretary of State officer filing is verified. A LinkedIn employment claim confirmed only by the company’s own website is still unverified — both sources are controlled by the same party.
Tier 5 — Anonymous and unverifiable sources (context only)
Forums, review sites, anonymous posts, comment sections, Reddit threads.
May surface useful investigative leads. Cannot be cited as supporting any factual claim. The value of Tier 5 sources is entirely in what they suggest to look for in Tier 1–3 systems.
Applying the Hierarchy in Practice
After completing the pivot phase, assign a tier to every result in your notes. This single step organizes the entire body of research and identifies what needs further work before the report.
The practical rule: Tier 1 results are reliable anchors. Tier 2 results are highly reliable and can often stand alone for professional credentials. Tier 3 results are leads requiring Tier 1 verification. Tier 4 results are claims requiring independent verification. Tier 5 results are investigative directions only.
→ Related guide: What Are Public Records?
→ Related guide: Best Government Databases for Background Research
Phase 6 — Cross-Referencing
Cross-referencing is the process of comparing a finding across independent sources to determine how well it is supported. The source hierarchy tells you how reliable each individual source is. Cross-referencing tells you how many independent reliable sources agree.
Both dimensions matter. A finding from a single Tier 1 source is reliable but not corroborated. A finding from three Tier 3 sources is corroborated but not reliably verified. A finding from a Tier 1 source that is also consistent with two Tier 3 sources is both reliable and corroborated — the strongest form of verification available through OSINT.
The Cross-Referencing Principle
Single source → lead Two independent sources → corroboration Tier 1 source + independent corroboration → verified findingWhat “independent” means: Two sources are independent when neither derived the information from the other. A county property deed and a PACER bankruptcy filing that both list the same address are independent — created by different agencies for different purposes, neither is the source of the other’s data.
A people-search aggregator and the county property deed the aggregator’s address data was derived from are not independent — they share a common origin. This is the most commonly misunderstood aspect of cross-referencing, and the most common source of false corroboration in OSINT.
What to Cross-Reference
Addresses — An address confirmed in a county property deed, a PACER court filing, and a state licensing board record is verified — three independent Tier 1 or Tier 2 sources. An address appearing in three aggregator profiles is not verified — all three may trace to the same underlying data source.
Employment claims — A claimed employer confirmed in a Secretary of State officer filing, a dated press release, and a SEC proxy statement is verified across independent sources. A claimed employer confirmed only on LinkedIn and the company’s own website is unverified — both sources are controlled by the same party.
Business ownership — A claimed ownership interest confirmed in a Secretary of State annual report, a bankruptcy Schedule A/B (sworn asset disclosure), and a PACER civil lawsuit identifying the person as company principal is verified through independent Tier 1 sources.
Timeline consistency — When multiple records reference the same person at the same employer during the same period, compare the dates. Inconsistencies — a person claiming employment from 2018 to 2022 but appearing as a corporate officer only from 2020 to 2022 — are findings in themselves.
Identity attribution — Before any record can be cited as supporting a finding, it must be confirmed that the record refers to the subject rather than a different person with the same name. Identity confirmation requires at least two corroborating identifiers — date of birth, confirmed address, associated business, or other details that link the record specifically to the person under investigation.
Cross-Referencing vs. Confirming
The key question for every cross-reference comparison: could these two results share a common origin?
If they could — if one aggregator might have populated its data from the same county record as another — they are not independent for cross-referencing purposes. Independence requires different agencies, different data collection methods, and no plausible shared source.
→ Related guide: How Investigators Verify Someone’s Identity
Phase 7 — Confidence Scoring
After applying the source hierarchy and cross-referencing, every significant finding gets a confidence level. This is the final step before the report — the assessment that determines how a finding is presented and what it can be used to support.
The Three Confidence Levels
Low confidence — single source, unverified
Definition: The finding appears in one source not independently confirmed.
- Source is Tier 3, 4, or 5
- No independent corroboration exists
- Identity attribution may not be confirmed
What it means for reporting: This is a lead, not a finding. It belongs in the “unverified leads” section — never in the confirmed findings section. Acting on a low-confidence finding as though it were confirmed is the most common source of OSINT errors and the most common source of OSINT legal liability.
Example: An address appearing in one BeenVerified profile, not confirmed in any county property record or court filing.
Medium confidence — corroborated, not yet government-verified
Definition: The finding appears in multiple independent sources but has not yet been confirmed against a Tier 1 government record.
- Multiple Tier 3 or Tier 4 sources agree
- Sources appear to be independent of each other
- Tier 1 verification not yet completed
What it means for reporting: This supports a working conclusion but should not be presented as confirmed. It belongs in the “corroborated findings” section. Further verification against a Tier 1 source is recommended before acting on the finding.
Example: An address appearing consistently in three aggregator profiles with different data origins, not yet confirmed in county property records or court filings.
High confidence — Tier 1 verified and corroborated
Definition: The finding is confirmed by at least one Tier 1 or Tier 2 source and is consistent with independent corroborating sources.
- At least one Tier 1 or Tier 2 source confirms the finding
- Consistent with other independent sources
- Identity attribution confirmed
- No material contradictions in the research
What it means for reporting: This is a confirmed finding, presentable in the confirmed findings section. It can support conclusions and recommendations.
Example: An address appearing in a county property deed (Tier 1), a PACER bankruptcy filing (Tier 1), and a state court filing (Tier 1) — three independent government sources confirming the same location.
The Confidence Scoring Matrix
Source combination Confidence level Single Tier 5 source Not reportable Single Tier 4 source Not reportable Single Tier 3 source Low Multiple Tier 3 sources (independent) Low–Medium Tier 4 + Tier 3 (independent) Low Multiple Tier 3 + Tier 2 Medium Single Tier 2 source Medium–High Single Tier 1 source Medium–High Tier 1 + Tier 3 (independent) High Multiple Tier 1 sources High Tier 1 + Tier 2 (independent) High How to Apply Confidence Scores
Step 1: Identify the highest-tier source supporting this finding.
Step 2: Check independence — are corroborating sources genuinely independent, with different agencies and no shared data origin?
Step 3: Confirm identity attribution — does the record refer to your specific subject, confirmed through at least two corroborating identifiers?
Step 4: Check for contradictions — do any sources conflict with this finding?
Step 5: Assign the confidence level using the matrix.
Step 6: Label every finding in your notes with its confidence level before writing the report.
Conflict Resolution: When Sources Disagree
Sources will sometimes contradict each other. This is not an anomaly to dismiss — it is a normal feature of working with multiple independent sources, and it is often where the most important findings emerge.
Types of Conflicts and How to Handle Them
Tier 3 result vs. Tier 1 result
The most common conflict. An aggregator shows an address that a county property record definitively contradicts.
Resolution: The Tier 1 result wins. Note the conflict in your research log, cite the Tier 1 result as the verified finding, and include the aggregator discrepancy as a note if it’s potentially meaningful.
Two Tier 1 results contradict each other
Less common but more significant. Two government records showing different addresses for the same person during the same time period.
Resolution: Do not choose one and suppress the other. Investigate further. Common explanations: the addresses serve different purposes (residential vs. business), one record contains a data entry error, or the two records refer to different individuals and the identity attribution needs reconfirmation. Document both, note the conflict, and continue investigating.
Self-reported source vs. government record
A LinkedIn profile claims employment from 2018 to 2022. A Secretary of State filing shows corporate officer status only from 2020 to 2022.
Resolution: The government record is authoritative for what it shows. The discrepancy doesn’t necessarily mean the employment claim is false — corporate officer status and employment are different things. But the inconsistency warrants further investigation.
Conflicting dates across independent records
Resolution: Identify which record is most authoritative for the specific date type. A court filing’s date stamp is authoritative for when the filing occurred. A deed’s recording date is authoritative for when the deed was recorded. Weight the most authoritative record for that specific date.
Conflict that can’t be resolved
Resolution: Document both results with their sources, note the conflict explicitly in the report, and label the finding as medium confidence pending resolution. The conflict itself is a finding: “Records conflict on this point — further investigation is recommended.”
Conflicts as Investigative Leads
The most important insight about conflicts: they often indicate something worth investigating rather than a data quality problem to dismiss.
A property record showing a transfer to a family member shortly before a bankruptcy filing, conflicting with the bankruptcy schedule’s asset disclosure, is not a data error — it’s a potential fraudulent conveyance. A claimed employer on LinkedIn that doesn’t appear in any Secretary of State record, licensing database, or court filing isn’t necessarily a data gap — it may be a fabricated employment claim worth documenting as a material discrepancy.
When two sources conflict and neither explanation is obvious, the conflict becomes the finding. Treat it as a lead requiring a targeted pivot search before resolution.
→ Related guide: OSINT Pivoting: How to Follow Data Connections
The Complete Verification Workflow
The full verification process for a single finding:
Finding discovered during pivoting ↓ Step 1: Assign source tier (Tier 1–5) ↓ Step 2: Search for independent corroboration (different agency, different data origin) ↓ Step 3: Confirm identity attribution (≥2 corroborating identifiers) ↓ Step 4: Check for contradictions ↓ Conflict found? Yes → investigate → document result No → continue ↓ Step 5: Assign confidence level High: Tier 1 confirmed + corroborated → confirmed finding Medium: Multiple sources, no Tier 1 → corroborated finding Low: Single source, unverified → unverified lead ↓ Step 6: Document complete finding record (finding · source · tier · corroboration · identity · conflicts · confidence · date) ↓ Phase 8: Output to report in correct sectionThe complete finding record — required elements before any finding enters the report:
Element Example Finding statement “Subject owns property at 4821 Shoal Creek Blvd, Austin TX” Best source Travis County Appraisal District, Parcel 123456 Source tier Tier 1 Independent corroboration PACER Case No. 20-10234 lists same address Identity confirmed by Phone number in PACER filing matches subject’s provided number Contradictions None found Confidence level High Retrieval date March 15, 2024 Common Verification Mistakes
Treating aggregator corroboration as independent verification. Three aggregator profiles showing the same address are not three independent sources — they may all derive from the same county record. Independence requires different origin systems, not different display platforms.
Skipping identity attribution. A court record naming “John Smith” is not evidence about your subject until you’ve confirmed it’s the same John Smith through corroborating identifiers.
Conflating tier with accuracy. A Tier 1 source is more reliable than a Tier 3 source on average — but individual Tier 1 records can contain errors. A deed with a misspelled name, a court filing with a wrong address — these exist. Tier designation means created under legal obligation by an independent government agency, not guaranteed to be error-free.
Upgrading confidence without new evidence. A low-confidence finding doesn’t become medium confidence because it’s consistent with what you expected to find. Confidence level upgrades require new independent sources — not reinterpretation of existing ones.
Dismissing conflicts rather than investigating them. The most consequential verification mistake. A conflict between sources is a finding. Dismissing it produces reports that contain unresolved contradictions presented as clean results.
Stopping verification before the report. Verification is complete only when every significant finding has a documented source tier, documented corroboration, documented identity attribution, and a documented confidence level.
Verification Applied: A Worked Example
Claim: VP of Operations, Meridian Capital Group, 2017–2021.
Step 1 — Identify source tiers that could confirm this:
- Secretary of State officer filing (Tier 1)
- SEC filing if public company (Tier 1/2)
- FINRA BrokerCheck if financial industry (Tier 2)
- Court records naming the person in a professional role (Tier 1)
- LinkedIn profile (Tier 4 — self-reported)
- Company website (Tier 4 — controlled by same party)
Step 2 — Search Tier 1 sources: Delaware SoS (registered state): annual reports 2017–2021 show no officer with subject’s name. Texas SoS (operating state): same result. PACER name search: one civil lawsuit, 2019, Northern District of Texas. Case filing identifies subject as “Director of Operations, Meridian Capital Group” — not VP, but confirms employment at Meridian.
Step 3 — Additional Tier 1 search: Texas court portal: one additional 2020 case lists subject as defendant alongside Meridian Capital Group, employer confirmed.
Step 4 — Identity attribution: Subject’s LinkedIn shows birth year consistent with PACER filing’s identifying details. Address on PACER filing matches address confirmed in property records. Identity attribution: confirmed.
Step 5 — Conflict assessment: Employment at Meridian: confirmed at Tier 1 (two independent court records). Title discrepancy: 2019 PACER filing says “Director of Operations,” claimed title is “VP of Operations.” Date range: court records confirm presence 2019–2020, not 2017–2021.
Confidence levels:
- Employment at Meridian Capital Group: High (two independent Tier 1 court records)
- Title “VP of Operations”: Low (claimed only, contradicted by Tier 1 record showing “Director”)
- Date range 2017–2021: Medium (confirmed 2019–2020; 2017–2018 and 2021 not independently verified)
Finding for report: Employment at Meridian Capital Group confirmed through two independent federal court filings. Title as claimed (“VP of Operations”) contradicted by a Tier 1 source identifying the subject as “Director of Operations” in 2019. Employment confirmed for 2019–2020; the 2017–2018 and 2021 periods are not independently verified in available public records.
Frequently Asked Questions
Can a single Tier 1 source be enough to verify a finding? For most practical purposes, yes — a single clear Tier 1 result with no contradicting sources is often sufficient. Adding independent corroboration always strengthens confidence, but a property deed confirming someone owns a specific property is reliable on its own. The Medium–High designation for single Tier 1 sources in the matrix reflects that corroboration is preferred, not that single Tier 1 results are unreliable.
What if no Tier 1 source exists for a specific claim? Some claims are not verifiable through Tier 1 government records — informal employment history, personal relationships, private transactions. For these, the highest achievable confidence is medium. Document that no Tier 1 source exists, note the corroboration that does exist, and label the finding accordingly.
Does cross-referencing require additional searches? No — cross-referencing uses results already gathered during the pivot phase. The purpose is to assess relationships between existing results, not run additional searches. Additional searches may be triggered by specific verification needs (confirming identity attribution, resolving a conflict) but the primary cross-referencing work is analytical.
How do I handle a Tier 1 source that appears to contain an error? Document the apparent error, search for additional Tier 1 sources that might clarify it, and don’t present the erroneous record as verified without noting the discrepancy. A deed with a misspelled name should be noted as potentially referring to the subject based on corroborating identifiers — not simply cited as confirmed.
When is verification complete? When every significant finding has a documented source tier, at least one independent corroborating source, confirmed identity attribution, a checked conflict status, and an assigned confidence level. If any finding is missing any of these elements, verification is not complete.
Final Thoughts
Verification is the phase that determines whether OSINT produces intelligence or noise. Searching fills notebooks. Verification determines what the notebook actually contains.
The three components — source hierarchy, cross-referencing, and confidence scoring — work together as a system. The hierarchy establishes the baseline reliability of each source. Cross-referencing establishes whether independent sources agree. Confidence scoring converts both assessments into a single clear label that travels with every finding into the report.
The standard is simple: every finding gets a tier, every finding gets cross-referenced for independence, every finding gets a confidence level, and every conflict gets investigated rather than dismissed. Applied consistently, this system produces outputs that are honest about what they know, honest about what they don’t, and reliable enough to act on.
Verification is not about finding agreement — it is about proving independence, reliability, and identity before treating any information as established.
Where to Go Next
For the full process this fits into: OSINT Workflow: The 8-Phase Investigation Framework — Phases 5–7 sit between pivoting and reporting.
For Phase 4 — what produces the raw material verification works with: OSINT Pivoting: How to Follow Data Connections Across Systems
For Phase 8 — how to present verified findings: How to Build an OSINT Report — the four report formats, documentation standards, and the findings/conclusions distinction.
For professional-depth methodology: OSINT for Advanced Investigators — advanced source analysis, infrastructure correlation, breach databases, and professional documentation standards.
Related Guides
- OSINT Workflow: The 8-Phase Investigation Framework
- OSINT Pivoting: How to Follow Data Connections
- How to Build an OSINT Report
- OSINT Tools for Beginners
- OSINT for Advanced Investigators
- Best Government Databases for Background Research
- How Investigators Verify Someone’s Identity
Disclaimer: This article is for informational purposes only and does not constitute legal advice. OSINT research methods and their permissible uses vary by jurisdiction and purpose. If you are using OSINT findings for employment, housing, or credit decisions, ensure compliance with FCRA requirements. This article may contain affiliate links — we may earn a commission if you purchase through them, at no extra cost to you.
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