Open-source legal evidence bundle standard
Legal reasoning you can replay.
Evidence you can verify.
Legal OREO packages AI-assisted legal work into five preserved layers: opinion, rule, evidence, objection, and seal.
Not legal advice. Not a case decision. A portable evidence record for attorney review, insurer review, audit, and institutional preservation.
The answer is only one layer. The bundle is the record.
The legal conclusion, recommendation, memo position, or issue answer being preserved.
· opinion/opinion.json · opinion/conclusion_status.json
The statutes, regulations, cases, contract clauses, policy terms, court rules, standards, or authorities relied upon.
· rules/authorities.json · rules/jurisdiction.json · rules/as_of_date.json
The source documents, facts, exhibits, citations, spans, attachments, and reviewed materials supporting each material claim.
· evidence/evidence_map.json · evidence/citation_spans.json · evidence/source_index.json · sources/contract.pdf · sources/email_thread.pdf
The adverse authorities, exceptions, counterarguments, unresolved issues, exclusions, caveats, factual disputes, and defeaters that qualify the legal conclusion.
· objections/defeaters.json · objections/adverse_authorities.json · objections/exceptions.json · objections/unresolved_issues.json
The manifest, hash chain, signature, event log, receipt, timestamp, review record, and verification report showing that the bundle has not been silently altered.
· manifest.json · logs/events.jsonl · signatures/bundle_receipt.json · signatures/bundle_signature.sig · reports/verification_report.json · reports/verification_report.md