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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11950ae27e2e97fce10bc9d9d9d6365b27171f82dd26c360114f102a9d274eb1. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0129ac9-3fcb-47e2-8366-ac2c7d4a706e.json and https://artists.proofprofile.net/proofs/artist/b0129ac9-3fcb-47e2-8366-ac2c7d4a706e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Songs from an old hard disk (Un-Released Tracks, Disc1)