Paul Hoffman may refer to: Sportspeople Paul Hoffman (basketball) (1925–1998), American basketball player Paul Hoffman (rowing) (born 1946), US Olympic rowing coxswain Paul Hoffman (weightlifter) (bo
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 0x3b5e6d06ca72a8491d5354a757418632a5b28c573276b3f51709d6a6e29b70bf. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/386c1f52-9fca-4b50-9f09-bf4b6643299b.json and https://artists.proofprofile.net/proofs/artist/386c1f52-9fca-4b50-9f09-bf4b6643299b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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