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 0x5d0eb3bdae46e9016b7a5289582dc030eace9c9db4d106acadbed971880b2f00. 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/2c694a65-ddfd-416a-8581-8d7b301bd1a0.json and https://artists.proofprofile.net/proofs/artist/2c694a65-ddfd-416a-8581-8d7b301bd1a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x1042ea5cffbcd0f019c0a97e44779cbea114065a8358d299f7a0ab892e4fbb81","isrc":"DEU671900915","name":"Pororoca - Radio Edit","registered_at":"2026-06-07T14:15:30Z","spotify_id":"4fQewx3TWzldEKuTOGdXop","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 0x1042ea5cffbcd0f019c0a97e44779cbea114065a8358d299f7a0ab892e4fbb81. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4fQewx3TWzldEKuTOGdXop.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/4fQewx3TWzldEKuTOGdXop.
{"copyright_id":"0xd78f5d7a79c9ae362b673ca956a93b74c0d4fb7e69cd56bf1ed9b84d1e7ecf94","isrc":"DEU671900916","name":"Quiero - Radio Edit","registered_at":"2026-06-06T05:14:09Z","spotify_id":"60MvW5eHV1a7iyQk3Ne2le","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78f5d7a79c9ae362b673ca956a93b74c0d4fb7e69cd56bf1ed9b84d1e7ecf94. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/60MvW5eHV1a7iyQk3Ne2le.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/60MvW5eHV1a7iyQk3Ne2le.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd0113a62dbf15de08396666c8e306f456ff29454efb34b98f722a034a5a502. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1W4nmkKNjkUYSiIg4eaU4d.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/1W4nmkKNjkUYSiIg4eaU4d.
{"copyright_id":"0xcc559c168f3cc6c5495b8422add8f59819a99915a0e4dcaa04b349e037c3fd57","isrc":"DEU671900911","name":"Pororoca - Mollono.Bass Remix","registered_at":"2026-06-07T20:48:50Z","spotify_id":"4taivtumK19CMC4WNoiTeC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc559c168f3cc6c5495b8422add8f59819a99915a0e4dcaa04b349e037c3fd57. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4taivtumK19CMC4WNoiTeC.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/4taivtumK19CMC4WNoiTeC.
{"copyright_id":"0xc943d7da9b2baa922ca6a167f50b24d5d54344963b28a67ef638b6b0596ee065","isrc":"DEU671900913","name":"Pororoca - Herrhausen & Treindl Remix","registered_at":"2026-06-06T08:33:23Z","spotify_id":"4xYJCwMcIC60BKRUmouH9q","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc943d7da9b2baa922ca6a167f50b24d5d54344963b28a67ef638b6b0596ee065. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4xYJCwMcIC60BKRUmouH9q.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/4xYJCwMcIC60BKRUmouH9q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fb17e6f59677ed31912389249c703149f6c14d1e5bc018f44bf61f7aa6fc96. 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/4rmAji4rZOGaNU5J5B20Bg.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/4rmAji4rZOGaNU5J5B20Bg.
Pororoca feat. Anissa Damali - Mollono.Bass Remix
{"copyright_id":"0xe1fcb430496a8a6d6972e902afee4f2e3fd3174de9db77a57047a0cb7ecfab71","isrc":"DEU671902037","name":"Pororoca feat. Anissa Damali - Mollono.Bass Remix","registered_at":"2026-06-21T01:36:05Z","spotify_id":"5CIgmRU7BNL8YQ2Eg1vHWa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fcb430496a8a6d6972e902afee4f2e3fd3174de9db77a57047a0cb7ecfab71. 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/5CIgmRU7BNL8YQ2Eg1vHWa.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/5CIgmRU7BNL8YQ2Eg1vHWa.