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 0x4fed739f157671b4f98e2737924d0b548044dc1d48014e818e085ac36703cd55. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a41ac77-c9a3-4af5-8d42-db2e15b8aa3d.json and https://artists.proofprofile.net/proofs/artist/1a41ac77-c9a3-4af5-8d42-db2e15b8aa3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x634f4113c42a39e9b6dc191bea92c13bef706cf753ef4da712fe7b0bafa5525d","isrc":"ES71G1858450","name":"It’s Yours","registered_at":"2026-06-27T11:37:02Z","spotify_id":"73sw6oOe3YvjhPSCnLwQBM","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634f4113c42a39e9b6dc191bea92c13bef706cf753ef4da712fe7b0bafa5525d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/73sw6oOe3YvjhPSCnLwQBM.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/73sw6oOe3YvjhPSCnLwQBM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab0891d544ec43c8e818c3ed058d3d45b41bd29d315f1db594536f4d83d70ae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5iw89NwQMRXzroogNc1o6l.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5iw89NwQMRXzroogNc1o6l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714b97ce09eb1d531083da39b0c17d52c8359984a5bd708be24659d05a83096e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0fHQH4pnepu1zOfQN3lJqE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0fHQH4pnepu1zOfQN3lJqE.