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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e77017473b5f6c4b8f7dda270d0075cd32e3953252b8e46029b75ce628237c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91d5391b-8561-4847-967e-8274a8f617b1.json and https://artists.proofprofile.net/proofs/artist/91d5391b-8561-4847-967e-8274a8f617b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Ain't Going Back to School/I Don't Do No More
Kindness Peace and Grace / You Need Only to Be Still
Living for Today / The Business End of the Business