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 0xd7006156c5485ec1ceeebafde4e86e645dc8afaedac0b8cdfe1c7f803d6f1377. 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/62bb2e8d-b775-4ca2-a7d4-c31ad16d08ef.json and https://artists.proofprofile.net/proofs/artist/62bb2e8d-b775-4ca2-a7d4-c31ad16d08ef.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 0x98500cd2d5eb4afeecae91542672071c374ab8e164131888a2352fc7c2657909. 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/1mUuXWRCLW06E3S7PaFSSp.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/1mUuXWRCLW06E3S7PaFSSp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e5da965afa764fd7630394f74f97d220861a4e65a3c50d496ed10c561e5767. 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/2vn01T5bGf2v1i5KFHNyPP.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/2vn01T5bGf2v1i5KFHNyPP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19277b1bbbc4f78f77f7b920124452756d18328451edca4f2c04c5134b9c5692. 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/4aM0slRdyvXgDQdsZrsfyp.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/4aM0slRdyvXgDQdsZrsfyp.
{"copyright_id":"0x0dedbee4cb1b340e2a9a9dba155e1c780f16e74a6e52238c3d5106d77c59316f","isrc":"USMLG2150593","name":"The Rest Of Our Life","registered_at":"2026-06-26T10:32:04Z","spotify_id":"4MxoEL2SkxLquZMbyyr2Bu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dedbee4cb1b340e2a9a9dba155e1c780f16e74a6e52238c3d5106d77c59316f. 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/4MxoEL2SkxLquZMbyyr2Bu.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/4MxoEL2SkxLquZMbyyr2Bu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16abb8d7b96951536f2a8212c0a44d68a4acd5bc3d8894d3c4d7774f09a7e789. 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/7l2VuAJ8ClAbri9vH3Ccx0.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/7l2VuAJ8ClAbri9vH3Ccx0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb798df40bc79de469ff58f1d740dee395ca137d625632a7f345c3612d3299183. 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/1ivFxtfwLFadrWPLEOyTH5.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/1ivFxtfwLFadrWPLEOyTH5.
{"copyright_id":"0x0d605f1f6e8ddf5efcdad05caac695b0f4b2231459aa1b4216d305aa4d0e28f4","isrc":"USMLG2150602","name":"The Best Of Me","registered_at":"2026-06-28T04:23:39Z","spotify_id":"0LJXPszs6WJamOOoEoirTN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d605f1f6e8ddf5efcdad05caac695b0f4b2231459aa1b4216d305aa4d0e28f4. 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/0LJXPszs6WJamOOoEoirTN.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/0LJXPszs6WJamOOoEoirTN.
{"copyright_id":"0xec55478a04491861d387cd063c7699a0ccc7a239d1d47bc56d7c7dcb8cf2d5b7","isrc":"USMLG2150603","name":"Ain't Nothing Like","registered_at":"2026-06-22T15:33:36Z","spotify_id":"4GtsrosR0Y6pJjXr3jddTP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec55478a04491861d387cd063c7699a0ccc7a239d1d47bc56d7c7dcb8cf2d5b7. 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/4GtsrosR0Y6pJjXr3jddTP.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/4GtsrosR0Y6pJjXr3jddTP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fc6c2de9296096763d20b6085dc6c54bdf54c11d926a390cebfc77ed13d03c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1gEm9BkmgsyFPzVQ8aQ0if.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/1gEm9BkmgsyFPzVQ8aQ0if.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e0bf636f75971b1836fe24332afaf0c42370968c24320c81c5ba95d6185ae1. 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/6mmVZxy6XJWrUg4A7RfcLD.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/6mmVZxy6XJWrUg4A7RfcLD.
I Belong To You (Every Time I See Your Face)
{"copyright_id":"0x10d16fff3b5cf8270614625d0fcf547a9053d8ba122b867562f514455c92e3f2","isrc":"USRC19604522","name":"I Belong To You (Every Time I See Your Face)","registered_at":"2026-06-04T06:36:41Z","spotify_id":"1nP6feYWJVpbO41aezFtm2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d16fff3b5cf8270614625d0fcf547a9053d8ba122b867562f514455c92e3f2. 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/1nP6feYWJVpbO41aezFtm2.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/1nP6feYWJVpbO41aezFtm2.
{"copyright_id":"0x04018f4d91a2cb08a3d6659114164c82bb5c0b240cc0a4dc356da2ad0b8e78e4","isrc":"USRC19604738","name":"Do You Like This","registered_at":"2026-06-05T06:43:54Z","spotify_id":"5XpcWuM4N62zYnCRgyziAu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04018f4d91a2cb08a3d6659114164c82bb5c0b240cc0a4dc356da2ad0b8e78e4. 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/5XpcWuM4N62zYnCRgyziAu.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/5XpcWuM4N62zYnCRgyziAu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e312b983532283d77eb1c8c8a6b39cef38d1fd3ad662cb369b8e0e2cc9c00d. 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/5A3UXF1dRwlrQJ9s29XShe.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/5A3UXF1dRwlrQJ9s29XShe.
{"copyright_id":"0x5dc9ad1f53e1379eeb42fe55e6924a8e433c614eebdf6a64655794671cb6f37b","isrc":"USRC19604740","name":"Just Once, Once More, Three Times","registered_at":"2026-06-06T00:37:19Z","spotify_id":"6YJckcIoLMgS3vXewckJqm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc9ad1f53e1379eeb42fe55e6924a8e433c614eebdf6a64655794671cb6f37b. 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/6YJckcIoLMgS3vXewckJqm.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/6YJckcIoLMgS3vXewckJqm.
{"copyright_id":"0x3c1caa8141b04e53755d154ffcbdf4dce21f5dd8e488414bcfd14f5d15ad73e5","isrc":"USRC19604741","name":"I Gotta Be Down","registered_at":"2026-06-07T16:29:31Z","spotify_id":"3yJvpwkja6AF2JH9U1UXsa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1caa8141b04e53755d154ffcbdf4dce21f5dd8e488414bcfd14f5d15ad73e5. 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/3yJvpwkja6AF2JH9U1UXsa.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/3yJvpwkja6AF2JH9U1UXsa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafbc74be6b29ecb9a2615865180107b46ebb717a997352cc1b72ee8651a4aaa. 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/6VyZf6fL6Lh2Ydk8IEcq9x.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/6VyZf6fL6Lh2Ydk8IEcq9x.
{"copyright_id":"0x7027e5f6df6787a460e4c1dc4ba103ebd48ed6a59366456f772c5334e494ddab","isrc":"USRC19604457","name":"That's The Way I Feel About Cha'","registered_at":"2026-06-09T22:58:08Z","spotify_id":"4NmZ7pl17up2mN96UePyDX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7027e5f6df6787a460e4c1dc4ba103ebd48ed6a59366456f772c5334e494ddab. 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/4NmZ7pl17up2mN96UePyDX.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/4NmZ7pl17up2mN96UePyDX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07981d6ce7ef65d51776579aa36caf641b10ce85e1dd8a594aeda7ce72b5d21. 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/4L38QwFSXq277MyUMiYCBD.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/4L38QwFSXq277MyUMiYCBD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3d7fb9fb0305c436e2907e44194751622d8587bbc14d252ddca01910a6ece8. 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/1Sz3PCllaMnpiDeFwxbHX5.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/1Sz3PCllaMnpiDeFwxbHX5.
{"copyright_id":"0x82eb67f6bb49986438fba0210ea37852a88f1a95bde5dcc6db030d03bf55e6e7","isrc":"USRC19604746","name":"Let Me Come Home","registered_at":"2026-06-07T23:42:15Z","spotify_id":"356LZgI1bBwwTte8ObIyVV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82eb67f6bb49986438fba0210ea37852a88f1a95bde5dcc6db030d03bf55e6e7. 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/356LZgI1bBwwTte8ObIyVV.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/356LZgI1bBwwTte8ObIyVV.
{"copyright_id":"0x78ce26eae7f96516fd7b344e3cba8168b6eac4e6601df9596f6a0fd23e579600","isrc":"USRC19604744","name":"Never Find Another Love Like Mine","registered_at":"2026-06-07T23:43:05Z","spotify_id":"5CvewRFSUTlkG4o2yRae6Y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ce26eae7f96516fd7b344e3cba8168b6eac4e6601df9596f6a0fd23e579600. 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/5CvewRFSUTlkG4o2yRae6Y.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/5CvewRFSUTlkG4o2yRae6Y.
{"copyright_id":"0x3a93b6b1dd908a2d60e7bbfcdc62a0fd62ad1020f07614d6d671cda50d31ced4","isrc":"USRC19604747","name":"Real Joy","registered_at":"2026-06-07T16:28:59Z","spotify_id":"3nCP1sBlLKOmOx4WiQ7WbP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a93b6b1dd908a2d60e7bbfcdc62a0fd62ad1020f07614d6d671cda50d31ced4. 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/3nCP1sBlLKOmOx4WiQ7WbP.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/3nCP1sBlLKOmOx4WiQ7WbP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc9ff9190f7e49610ef93dd87bdfd518e8c94b774481593c98b38ee8d7fee55. 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/1EuQck6gux75nImiLBoZ4V.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/1EuQck6gux75nImiLBoZ4V.
{"copyright_id":"0x13ae07f8f7033a7b9d11a839f55ac7ea9cc66ff5ab453bd75b30434726fa87e0","isrc":"QZLL92358177","name":"Say That You Will","registered_at":"2026-06-19T21:15:08Z","spotify_id":"2xtH6inpyLqPLcGn7FbrFs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ae07f8f7033a7b9d11a839f55ac7ea9cc66ff5ab453bd75b30434726fa87e0. 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/2xtH6inpyLqPLcGn7FbrFs.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/2xtH6inpyLqPLcGn7FbrFs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ec3e533e9578df4b68e7178487d88981e87a0e49e1bad5524f2c5ffcf2860a. 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/6VDNnvzo0n1x8YsyJWs05S.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/6VDNnvzo0n1x8YsyJWs05S.