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 0x2a9630beddeb43f22b8bb3000bb832b8890d35f5ad588dbdf867046eea7da141. 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/94c10939-66c6-46c6-97d7-38cc9b7d33c3.json and https://artists.proofprofile.net/proofs/artist/94c10939-66c6-46c6-97d7-38cc9b7d33c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xd6c81a853a4f3bf82ae0038ad389cfa0f1283ea28f10f6b41ed76e807bdb6b01. 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/4AFPo3Rgdvi46nK4UQeR2P.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/4AFPo3Rgdvi46nK4UQeR2P.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ae250f5dfd28d91dfcd6b93c06d936510cd96057c748241acc17a0ab109feb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6DhOKlQVrvMIUrbnRhOwKB.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/6DhOKlQVrvMIUrbnRhOwKB.
{"copyright_id":"0xcc54f9b1151865e52e6f187dc681c82c6697f694d9af4f8cbdc3ac4efa0f01a9","isrc":"QMFMG2378538","name":"Kuranyi Freestyle","registered_at":"2026-06-21T02:45:09Z","spotify_id":"1XIFk3SytYrbauBm4R7dkN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc54f9b1151865e52e6f187dc681c82c6697f694d9af4f8cbdc3ac4efa0f01a9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1XIFk3SytYrbauBm4R7dkN.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/1XIFk3SytYrbauBm4R7dkN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91deb44996df7a3403db31f6538e9e412fd9db3d3e69362ce8ef3fcbeb574f2. 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/1ELS0k59TB249c82ARCLTv.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/1ELS0k59TB249c82ARCLTv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ae250f5dfd28d91dfcd6b93c06d936510cd96057c748241acc17a0ab109feb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1rBFewt0bl0bEQszjwD3BC.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/1rBFewt0bl0bEQszjwD3BC.