1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867627ad3421019c53e28525992c7883d0736f6e861d28b24b6020ef6d7f7efb. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82881184-ef4c-4e4d-be9e-115bc8b6bbb6.json and https://artists.proofprofile.net/proofs/artist/82881184-ef4c-4e4d-be9e-115bc8b6bbb6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Tortured Poets Department: The Anthology, But Piano
calming piano through the picture window