thumb|upright|Peter Herman Adler, 1951 Peter Herman Adler (December 2, 1899 – October 2, 1990) was an American conductor. Career Adler was born in Gablonz an der Neiße, Austria-Hungary, which is now
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 0x110a75fd466eb67e4e7e7afa5d0bbd78f84ab9248677707f170d26bc4fdf2e7a. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5a39c6a-fb85-4e21-b86d-248fc5413826.json and https://artists.proofprofile.net/proofs/artist/f5a39c6a-fb85-4e21-b86d-248fc5413826.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).