Maryanne Amacher (February 25, 1938Note, while most sources state Amacher's birth year as 1938, she had in later years used the birth year 1943. – October 22, 2009) was an American composer and instal
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a107332229d3b16ac89910308b678cfb47d37a571336db752faa36bbde82507. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c70674ca-1b1a-4995-a50d-f7fdac46480f.json and https://artists.proofprofile.net/proofs/artist/c70674ca-1b1a-4995-a50d-f7fdac46480f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).