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 0x33fbb7b4956077c94a11ed197e01306266638bd7fcb41cd559821ba070bda1eb. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d500c9e-86a1-47ca-ad7d-e9ac9d2b98a9.json and https://artists.proofprofile.net/proofs/artist/3d500c9e-86a1-47ca-ad7d-e9ac9d2b98a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sleep in Heavenly Peace (feat. Kyle Dillingham)