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 0x1662188be51d33efd084e6cf99edf61a99deb6cd5f33d4a11e43da9d7b5b3568. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/781677a4-05fc-4b83-bf8f-4082d0a1217d.json and https://artists.proofprofile.net/proofs/artist/781677a4-05fc-4b83-bf8f-4082d0a1217d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x590e65d3e747b75eaf40dc6b22e54512c470c5df4bf7da3f3fec5b63e747f49f","isrc":"QZHN82149363","name":"three i's in INFINITY","registered_at":"2026-06-29T13:32:30Z","spotify_id":"5zPyni5ZM1JvVLVR05kQQd","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 0x590e65d3e747b75eaf40dc6b22e54512c470c5df4bf7da3f3fec5b63e747f49f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5zPyni5ZM1JvVLVR05kQQd.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/5zPyni5ZM1JvVLVR05kQQd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892447a2bab2876222910a32e947c7ea9dced467afd1798edd6b06751bdeec4b. 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/155SGjvj8vV295QBxZRd1L.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/155SGjvj8vV295QBxZRd1L.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7ca76c4caa455bc56e901f1fd96715cf9be5a52ae4974a6fa6da723354ea15. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1pHFFRQOEVNZb3QMBDDm67.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/1pHFFRQOEVNZb3QMBDDm67.