Long-Term Validation of Signatures Across the Retention Period

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Planned scope. Keeping a signature verifiable for three years after the last entry when the signer’s credential has expired.

Regulatory anchor. MARPOL Annex I Reg 17 (retention); IMO Res MEPC.312(74) Annex

Cluster. Electronic record books and MEPC.312(74). Catalogued in research/kb-gap-analysis-depth.md.

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