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 0x6e9560823779b6ecf99c8a8bc82abd8982fff15bad09e5ae257526a9c6d01171. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab594738-1f5e-4b18-a16a-35c0e2a0906d.json and https://artists.proofprofile.net/proofs/artist/ab594738-1f5e-4b18-a16a-35c0e2a0906d.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 0x9de5c6b3459ad237c857a4c84a90ac961aad8c75da952708880e520e1475f304. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1hqAriaUctIMv62hDNBLWi.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/1hqAriaUctIMv62hDNBLWi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f6745846d7cfb6da0549e389328db556ab39bd0e5f9b784f44b3f363732462. 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/2ecE5dzo2VFI99HGmcwymy.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/2ecE5dzo2VFI99HGmcwymy.
{"copyright_id":"0x43484b6ed3de08bcc678ec034b93007e622de054c4c32e31eaf7659af193733d","isrc":"QZTAZ2307653","name":"High Speed","registered_at":"2026-06-11T03:14:25Z","spotify_id":"1cAHFdtYvfxAdKSlPl7kOM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43484b6ed3de08bcc678ec034b93007e622de054c4c32e31eaf7659af193733d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1cAHFdtYvfxAdKSlPl7kOM.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/1cAHFdtYvfxAdKSlPl7kOM.
{"copyright_id":"0x26a0e0b35c879caefc2e018d79defa4d32b9b88d7c7af8fde1564b77697f3555","isrc":"QZFYZ2401594","name":"Love It Here - Remix","registered_at":"2026-06-10T20:07:17Z","spotify_id":"4cNcWi6pND2Zsmgv1HUpoX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a0e0b35c879caefc2e018d79defa4d32b9b88d7c7af8fde1564b77697f3555. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4cNcWi6pND2Zsmgv1HUpoX.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/4cNcWi6pND2Zsmgv1HUpoX.
{"copyright_id":"0x5fd94f88e6fdee7a5a50aa6922fc7e1e53568fb44e9904b78f0c2f9701b3def4","isrc":"USA2P2421403","name":"Off Time","registered_at":"2026-06-27T07:07:09Z","spotify_id":"7MqlrrOtSFZLa4rngCWfr3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd94f88e6fdee7a5a50aa6922fc7e1e53568fb44e9904b78f0c2f9701b3def4. 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/7MqlrrOtSFZLa4rngCWfr3.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/7MqlrrOtSFZLa4rngCWfr3.
{"copyright_id":"0x63e6f5ed21c1c14effe9171cf9b82871370c2cfefb07dc7553dc550eae33af2d","isrc":"QZDA72483941","name":"If I Hear","registered_at":"2026-06-23T12:17:25Z","spotify_id":"3ZPxd2XzbGOzCdOZrjHydo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e6f5ed21c1c14effe9171cf9b82871370c2cfefb07dc7553dc550eae33af2d. 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/3ZPxd2XzbGOzCdOZrjHydo.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/3ZPxd2XzbGOzCdOZrjHydo.
{"copyright_id":"0x5f90cee819944a79b90f79a1043463d33e6a9e3aa3f0e6f2f0eaf896dff9d8a3","isrc":"QZZ8A2449004","name":"Talk to me nice","registered_at":"2026-06-20T10:14:07Z","spotify_id":"1YAomLTFXAIPAnKKh7c5Xx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f90cee819944a79b90f79a1043463d33e6a9e3aa3f0e6f2f0eaf896dff9d8a3. 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/1YAomLTFXAIPAnKKh7c5Xx.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/1YAomLTFXAIPAnKKh7c5Xx.