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 0xe1f20d13a3838c5c50e6e14f08eefab622e5076b33e95fd4ad4e72668215a11a. 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/877c97a7-eeb9-43e2-93dd-48e4501f3301.json and https://artists.proofprofile.net/proofs/artist/877c97a7-eeb9-43e2-93dd-48e4501f3301.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Can't Stand The Rezillos: The [Almost] Complete Rezillos
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 0xc8b8b56dc5393f00f7602a94115296432bf8fd8a732034868b5275a777376db0. 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/1jY8TJCxBlljvi9unIKfBW.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/1jY8TJCxBlljvi9unIKfBW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263fe023e3ee15a41101ab00dc88caf9a16fc5aca58f48ebbd1cb6c3bbfaa7bc. 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/4wLlDSlR2a4vRKl8qWDhpY.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/4wLlDSlR2a4vRKl8qWDhpY.
Somebody's Gonna Get Their Head Kicked in Tonight
{"copyright_id":"0xa1dee80c15013e0e4d31535efc6e20f647c342aafe3779db00d3ef39a1dac93f","isrc":"USWB10400379","name":"Somebody's Gonna Get Their Head Kicked in Tonight","registered_at":"2026-06-05T14:26:32Z","spotify_id":"3q8pRsDaXqHZdo73Vsittc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dee80c15013e0e4d31535efc6e20f647c342aafe3779db00d3ef39a1dac93f. 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/3q8pRsDaXqHZdo73Vsittc.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/3q8pRsDaXqHZdo73Vsittc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79d7c296115fca8e540c8b43f412c1bc91a371f503c40c07138c3ea22f7b95f. 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/2sICTf5zrSZnTttimrcm2M.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/2sICTf5zrSZnTttimrcm2M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8ae4c8b43d979103aad1452b6b73e92eb35b88f4f9b14fd9ae47f211667dee. 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/7Cwu1zWO2LLzs69986d7kg.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/7Cwu1zWO2LLzs69986d7kg.
{"copyright_id":"0xdaa17caee667121a560c7eafaa8fbe72a92ce52e2cd83a215e75992ab4d77264","isrc":"USWB10400381","name":"It Gets Me","registered_at":"2026-06-19T00:07:48Z","spotify_id":"0nY3COyvGV7PN1yanc3lkA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa17caee667121a560c7eafaa8fbe72a92ce52e2cd83a215e75992ab4d77264. 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/0nY3COyvGV7PN1yanc3lkA.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/0nY3COyvGV7PN1yanc3lkA.
{"copyright_id":"0x24fa3a300b2bcea0f13ede3aa7b470d26bcbb24d73b8185c978be0824beb99fa","isrc":"USWB10400382","name":"I Can't Stand My Baby","registered_at":"2026-06-06T14:00:39Z","spotify_id":"3AvhbvM8MwCTGFXg4STokC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fa3a300b2bcea0f13ede3aa7b470d26bcbb24d73b8185c978be0824beb99fa. 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/3AvhbvM8MwCTGFXg4STokC.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/3AvhbvM8MwCTGFXg4STokC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa76f54dab066f4f38a089f7b98ba7bdc1e386f5442835b41abd700bd5d9593c. 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/0M58WHx8VDeeH7Muu702GR.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/0M58WHx8VDeeH7Muu702GR.
{"copyright_id":"0x5287191e5d78f2c9b4b9e028fc47960e605d1cb440c932481b3bf5bf29556bd4","isrc":"USWB10400384","name":"(My Baby Does) Good Sculptures","registered_at":"2026-06-07T23:11:36Z","spotify_id":"1V7M4xu8tCxQnBezajJfFC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5287191e5d78f2c9b4b9e028fc47960e605d1cb440c932481b3bf5bf29556bd4. 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/1V7M4xu8tCxQnBezajJfFC.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/1V7M4xu8tCxQnBezajJfFC.
{"copyright_id":"0xc1ab6b27aec63d40481a28628faccb388819eeddb1b85782251bf17802ceacdc","isrc":"USWB10400385","name":"I Like It","registered_at":"2026-06-19T19:53:15Z","spotify_id":"1ClJ4g54ESqE0BzRRAtVdQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ab6b27aec63d40481a28628faccb388819eeddb1b85782251bf17802ceacdc. 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/1ClJ4g54ESqE0BzRRAtVdQ.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/1ClJ4g54ESqE0BzRRAtVdQ.
{"copyright_id":"0xf06edab5dad721acb871f8a4e8d91fdfe87f6e505af3c37b80bf9e71ba67cee7","isrc":"USWB10400386","name":"Getting Me Down","registered_at":"2026-06-19T00:08:06Z","spotify_id":"0lrBqqoU38JWS6dUbjzOGB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06edab5dad721acb871f8a4e8d91fdfe87f6e505af3c37b80bf9e71ba67cee7. 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/0lrBqqoU38JWS6dUbjzOGB.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/0lrBqqoU38JWS6dUbjzOGB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a21ee920a2692631afe7e7c7a55aa53dea19a6c298da9fa1d12fb63787b96d. 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/29q6LhKiHyxU6yvhHfsOhU.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/29q6LhKiHyxU6yvhHfsOhU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691d669d070c96bd6352429ffe9ca750f7274bc2d51756ff0d92bf72470a5886. 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/6N9AMOOyrtJQiSDrSRYSjf.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/6N9AMOOyrtJQiSDrSRYSjf.
{"copyright_id":"0x84bbd6ebeeffc217e872d6b77dd228abf5ba993a16e99870732d47858e38c176","isrc":"USWB10400389","name":"Destination Venus","registered_at":"2026-06-09T00:38:43Z","spotify_id":"3QsbjrWyrfgT9NIYzlzOTq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bbd6ebeeffc217e872d6b77dd228abf5ba993a16e99870732d47858e38c176. 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/3QsbjrWyrfgT9NIYzlzOTq.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/3QsbjrWyrfgT9NIYzlzOTq.
{"copyright_id":"0x8c317f6f0f7b55995504046a4ed954d46cb4cf1ece1c1fb3d477d556cd09bce8","isrc":"USWB10400390","name":"Mystery Action","registered_at":"2026-06-22T13:39:06Z","spotify_id":"2krqUQGCxQuWUBIYKObCjg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c317f6f0f7b55995504046a4ed954d46cb4cf1ece1c1fb3d477d556cd09bce8. 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/2krqUQGCxQuWUBIYKObCjg.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/2krqUQGCxQuWUBIYKObCjg.
Top of the Pops - Live at the Glasgow Apollo, December 23, 1978
{"copyright_id":"0xa768be58446827963ffb23a514cce1668a1c8ffddf2c75bd8bfe0e08ea791adf","isrc":"USWB10400391","name":"Top of the Pops - Live at the Glasgow Apollo, December 23, 1978","registered_at":"2026-06-27T22:08:12Z","spotify_id":"6aAjF9nkP4pEJ9EeR4zzCr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa768be58446827963ffb23a514cce1668a1c8ffddf2c75bd8bfe0e08ea791adf. 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/6aAjF9nkP4pEJ9EeR4zzCr.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/6aAjF9nkP4pEJ9EeR4zzCr.
Mystery Action - Live at the Glasgow Apollo, December 23, 1978
Somebody's Gonna Get Their Head Kicked in Tonight - Live at the Glasgow Apollo, December 23, 1978
Thunderbirds Are Go - Live at the Glasgow Apollo, December 23, 1978
{"copyright_id":"0xeb34ce8510dd64d195fce785d36ccc825a679a0866314625a103240db065aeff","isrc":"USWB10400394","name":"Thunderbirds Are Go - Live at the Glasgow Apollo, December 23, 1978","registered_at":"2026-06-24T07:32:10Z","spotify_id":"4kCdwa8qxqsLh0mnlXpqMJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb34ce8510dd64d195fce785d36ccc825a679a0866314625a103240db065aeff. 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/4kCdwa8qxqsLh0mnlXpqMJ.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/4kCdwa8qxqsLh0mnlXpqMJ.
Cold Wars - Live at the Glasgow Apollo, December 23, 1978
Teenbeat - Live at the Glasgow Apollo, December 23, 1978
No - Live at the Glasgow Apollo, December 23, 1978
Land of a Thousand Dances - Live in Glasgow, December 23, 1978
I Need You - Live at the Glasgow Apollo, December 23, 1978
Culture Shock - Live at the Glasgow Apollo, December 23, 1978
Getting Me Down - Live at the Glasgow Apollo, December 23, 1978
Ballroom Blitz - Live at the Glasgow Apollo, December 23, 1978
{"copyright_id":"0xe1288d909e199e736789535ab5345ceae8b3653a51e81d1dea59a256d6597d36","isrc":"USWB10400401","name":"Ballroom Blitz - Live at the Glasgow Apollo, December 23, 1978","registered_at":"2026-06-27T22:09:05Z","spotify_id":"7Ajk0O5PpU3FBK3ejzFd24","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1288d909e199e736789535ab5345ceae8b3653a51e81d1dea59a256d6597d36. 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/7Ajk0O5PpU3FBK3ejzFd24.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/7Ajk0O5PpU3FBK3ejzFd24.
(My Baby Does) Good Sculptures - Live at the Glasgow Apollo, December 23, 1978
{"copyright_id":"0x17bcfaa256ad85ba3da7dac09f0b4a6699f6c3731211cb52d524cbddad27ad86","isrc":"USWB11701482","name":"Top of the Pops - 7\" Version","registered_at":"2026-06-09T12:22:53Z","spotify_id":"44rx4BTX16Go9Y89rcMhWt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bcfaa256ad85ba3da7dac09f0b4a6699f6c3731211cb52d524cbddad27ad86. 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/44rx4BTX16Go9Y89rcMhWt.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/44rx4BTX16Go9Y89rcMhWt.
(My Baby Does) Good Sculptures - 7" Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c791629ac459369809e822450e632b4c4f98c4cc864bb749e1643e339acec34. 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/5SGtl6n0r89zUUFFctklM5.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/5SGtl6n0r89zUUFFctklM5.
{"copyright_id":"0xb698a77c32ae15b0bb01b2ab5354b71cf00db85e4f1f764ccecf41c243284c4c","isrc":"USWB11701483","name":"20,000 Rezillos Under the Sea","registered_at":"2026-06-23T21:32:19Z","spotify_id":"0EKk2lKMfkZXAyvftHV4Kj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb698a77c32ae15b0bb01b2ab5354b71cf00db85e4f1f764ccecf41c243284c4c. 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/0EKk2lKMfkZXAyvftHV4Kj.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/0EKk2lKMfkZXAyvftHV4Kj.
{"copyright_id":"0x9550c5cfd309a685c742ba0f5d721a0cef028178f63cac6b6e265f51a9de5849","isrc":"GBLRR1100014","name":"Out Of This World","registered_at":"2026-06-27T22:09:13Z","spotify_id":"4dUR7E5fwmqLUfVhN8HYDu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9550c5cfd309a685c742ba0f5d721a0cef028178f63cac6b6e265f51a9de5849. 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/4dUR7E5fwmqLUfVhN8HYDu.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/4dUR7E5fwmqLUfVhN8HYDu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124738c9df970c59aae5e4379a5f473db6af7980481a98637bf3598fa9b81468. 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/5W0FjGXZinvv25rC5upjCr.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/5W0FjGXZinvv25rC5upjCr.