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P196 — AIEP — Evidence Multi-Source Agreement Protocol

Publication Date: 2026-04-12 Status: Open Source Prior Art Disclosure Licence: Apache License 2.0 Author/Organisation: Phatfella Ltd Schema: AIEP_OS_SPEC_TEMPLATE v1.0.1 — https://aiep.dev/schemas/aiep-os-spec-template/v1.0.1

Field of the Invention

[0001] The disclosure relates to multi-source agreement and corroboration mechanisms for evidence artefacts in computing environments.

[0002] More particularly, the disclosure concerns an evidence multi-source agreement protocol for use within an Architected Instruction and Evidence Protocol (AIEP) system, defining how evidence claims shared across multiple independent sources are assessed for agreement, producing corroboration scores that elevate or temper confidence in supported conclusions.

Framework Context

[0003] This invention operates within an Architected Instruction and Evidence Protocol (AIEP) environment as defined in United Kingdom patent application number GB2519711.2, filed 20 November 2025, the entire contents of which are incorporated herein by reference.

Summary of the Disclosure

[0004] A computer-implemented evidence multi-source agreement protocol comprises: defining agreement assessment over a ClaimCorroborationSet comprising two or more evidence artefacts asserting equivalent or closely related claims, where source independence is verified by checking that no artefact in the set shares retrieval_source_id with any other; computing a MultiSourceAgreementScore as a function of: number of agreeing independent sources (N), weighted by individual TrustScores summed to AgreementWeight, and divided by maximum possible AgreementWeight given the agreement threshold T — yielding MultiSourceAgreementScore = AgreementWeight / (N × max_individual_TrustScore); flagging a ClaimCorroborationSet as HIGHLY_CORROBORATED when MultiSourceAgreementScore ≥ 0.85 and N ≥ 3, as CORROBORATED when score ≥ 0.60 and N ≥ 2, and as WEAKLY_CORROBORATED otherwise; recording ClaimCorroborationRecords that persist the ClaimCorroborationSet membership, MultiSourceAgreementScore, corroboration_tier, and computation_timestamp; and surfacing corroboration_tier in evidence retrieval metadata to inform downstream reasoning context assembly.

[0005] Source independence verification is mandatory — corroboration between dependent sources (e.g., reprints of the same document) is disqualified.

[0006] The technical effect is modification of computing system behaviour by providing a quantified, independence-checked corroboration scoring mechanism over evidence sets, enabling reasoning systems to weight conclusions by multi-source agreement.

Claims

[0007] A computer-implemented method for evidence multi-source agreement assessment comprising: constructing ClaimCorroborationSets from independent sources; computing MultiSourceAgreementScores; classifying corroboration tiers; generating ClaimCorroborationRecords; and surfacing corroboration metadata in evidence retrieval outputs.

[0008] A system for evidence multi-source agreement assessment comprising one or more processors and a non-transitory computer-readable medium storing instructions to execute the method of claim 1.