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 0xc1cc8e73e0be2f9f95d43a34c4e9c65d9126578b6be4a298579020d396c9905c. 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/02bb3066-1391-4898-9cce-c1db2c0a0a2a.json and https://artists.proofprofile.net/proofs/artist/02bb3066-1391-4898-9cce-c1db2c0a0a2a.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 0x7ad2277469e925e3d5ba0334d1dee320d1f40f574d79b8395e31fc96ee051e5b. 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/2eLHuV98sKiVSc10sxIGeH.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/2eLHuV98sKiVSc10sxIGeH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a50c80c3f469f340cb5678f7a9e1f265a67eab4813a821fbc77811183422b4. 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/00xzYaiHc7qPiVDAbV4PAI.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/00xzYaiHc7qPiVDAbV4PAI.
{"copyright_id":"0xeccd3505c6533f6d32dc731c67cb9ae7b0e54c135e631edca5a46c8ae1313236","isrc":"ARSPO2400001","name":"ME TIENE LOCO","registered_at":"2026-06-20T11:29:13Z","spotify_id":"56DizVpEanHSUsoNuSGunh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccd3505c6533f6d32dc731c67cb9ae7b0e54c135e631edca5a46c8ae1313236. 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/56DizVpEanHSUsoNuSGunh.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/56DizVpEanHSUsoNuSGunh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd75e55036daf42736c4b9cf6c7b6b887713b70543de4edb6cdb88d1c354767. 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/2iRzSTD3ajKvmwSbbcRNnc.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/2iRzSTD3ajKvmwSbbcRNnc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47958c294ec3496f8b3b2e1d37090e44d698b2398bcab8a550636869b534f7ca. 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/1Tetlri6vO6kdXCxpPaXfv.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/1Tetlri6vO6kdXCxpPaXfv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf623138645efd90e60bab04f7d2c819fe0e9ab578e594dda11ad0bcaeacba1. 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/1HMXr6giOp1X5Nny3407YW.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/1HMXr6giOp1X5Nny3407YW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff3836f625916b175f4d139904063fb87a251ce4f9ed4497ddf33448e41a5b8. 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/6nwRxZBpNaozOm6TdFzyta.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/6nwRxZBpNaozOm6TdFzyta.
{"copyright_id":"0xba5a9a0c9aeec1445860d01ab360f5938a2bde6f77ea6806c9f3f5d642a1f365","isrc":"ARGO92100005","name":"Mal de la Cabeza","registered_at":"2026-06-04T11:59:40Z","spotify_id":"2DOlYD1QGUFYvaqTXFvB79","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5a9a0c9aeec1445860d01ab360f5938a2bde6f77ea6806c9f3f5d642a1f365. 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/2DOlYD1QGUFYvaqTXFvB79.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/2DOlYD1QGUFYvaqTXFvB79.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89b9fbbb4edbef0bb51458c7666424d9ec571b20eee49890b3b79182d82357c. 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/3UwtbiNC7fRgIBoNQmqLUg.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/3UwtbiNC7fRgIBoNQmqLUg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a65fee6dff18185b6fd2c4f27c82e1df4d51dab893bb9707263ffe5d041d643. 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/1I47ClwmevU1PgUHG8AVIY.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/1I47ClwmevU1PgUHG8AVIY.
{"copyright_id":"0x69e05b119bd3b61d34215c788b0f9edc71ed6553c75bc724a511c749ccc1bbca","isrc":"ARGO92100011","name":"Caida Gris","registered_at":"2026-06-05T05:34:22Z","spotify_id":"32Q0XBv3CGrhoHigQORFUc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e05b119bd3b61d34215c788b0f9edc71ed6553c75bc724a511c749ccc1bbca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/32Q0XBv3CGrhoHigQORFUc.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/32Q0XBv3CGrhoHigQORFUc.
{"copyright_id":"0xd986f4b88e3362205581a9b34cabafe6fae5605f347e2630f48db56d11f8ee52","isrc":"ARGO92100013","name":"Siguiendo Tus Pasos","registered_at":"2026-06-05T18:01:27Z","spotify_id":"1cirbn4RGwcayoRFkM6wnT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd986f4b88e3362205581a9b34cabafe6fae5605f347e2630f48db56d11f8ee52. 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/1cirbn4RGwcayoRFkM6wnT.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/1cirbn4RGwcayoRFkM6wnT.
{"copyright_id":"0x95a98dcfe86df3de397204e1d836492ee22c739346db4215e9dcef4cfbf8ef31","isrc":"ARY4P2400333","name":"Como Se Siente","registered_at":"2026-06-08T22:34:37Z","spotify_id":"638iGklpZ4wBKhqT7QCzAF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a98dcfe86df3de397204e1d836492ee22c739346db4215e9dcef4cfbf8ef31. 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/638iGklpZ4wBKhqT7QCzAF.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/638iGklpZ4wBKhqT7QCzAF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff3836f625916b175f4d139904063fb87a251ce4f9ed4497ddf33448e41a5b8. 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/334MnJs6lAv9b4Q45DEaYn.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/334MnJs6lAv9b4Q45DEaYn.