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 0x725bd7a94eb4e01a8b6ee798b8a0b5d6096e395cc953ead65a33d130d230d7b0. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3280fedf-1e83-441a-8773-e454ec3a1c4e.json and https://artists.proofprofile.net/proofs/artist/3280fedf-1e83-441a-8773-e454ec3a1c4e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music for Rainy Aprils - Laid-back Big Band Ballad with Guitar
Big Band Ballad with Vibraphone - Background for Calming Fridays
Amazing Background Music for Chill Tuesday