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 0x8ec3e8c462304d3c64744276d78a312ee64bdf32c478943024019d2bb258587c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e20184b0-0ce5-47fa-9729-8600ac567826.json and https://artists.proofprofile.net/proofs/artist/e20184b0-0ce5-47fa-9729-8600ac567826.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 0x058d775da54208e5d5666676ccb648e3a3e3ac2c2543b0820ce033bb65daa78f. 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/3oww93KUdUoE7d0sEwi25v.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/3oww93KUdUoE7d0sEwi25v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131435ba5119b43e42150bb6c62bc527754cee7d9426cbb664d488e89c594bd8. 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/065GjdJQxzWX3Nc4n233ce.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/065GjdJQxzWX3Nc4n233ce.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d8193a73300f5250c62531d1e82ce0038133ffe916318fa90188ec0a430812. 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/06AmupTfiDGI7sO4B6G835.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/06AmupTfiDGI7sO4B6G835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50aa19fa3df39b3ef79df0661c576094b0b725acb57fb01d634bfc94ebde6c7a. 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/5LEfdoft1uItuJFineIIsn.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/5LEfdoft1uItuJFineIIsn.
{"copyright_id":"0xe8120acd25f5b849a724e1b50303a2223ff0a13041025c6ecfcdf6ae2d40a290","isrc":"TCADY1892285","name":"No Apologies","registered_at":"2026-06-19T18:11:59Z","spotify_id":"1EYzuNbI8BahQ7jYDtIh2g","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8120acd25f5b849a724e1b50303a2223ff0a13041025c6ecfcdf6ae2d40a290. 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/1EYzuNbI8BahQ7jYDtIh2g.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/1EYzuNbI8BahQ7jYDtIh2g.
{"copyright_id":"0x9ad3a321ea771a7cc973c4bd68a80afac31fbf46b41db9114729ed513bdef52f","isrc":"TCAEF1990498","name":"Save Me - Acoustic","registered_at":"2026-06-05T22:52:48Z","spotify_id":"2LGMDKueL8LtmCFr1OERZr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad3a321ea771a7cc973c4bd68a80afac31fbf46b41db9114729ed513bdef52f. 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/2LGMDKueL8LtmCFr1OERZr.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/2LGMDKueL8LtmCFr1OERZr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ba83e5f0fecabbb0c223ba40f131b56f2a9554723e10aaa9d36bf5107e5f0. 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/67kYDI2rDbHuhg3hF5hGLu.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/67kYDI2rDbHuhg3hF5hGLu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7bdf67ac6951d362724871006e846f84be5baa6e870f8b2612efd8fa9ef483. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3tc6LdYq0BXeOlhXQHFFb3.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/3tc6LdYq0BXeOlhXQHFFb3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdbcb59128fc57fa2f05f8133178cdd298423ba10d1d69880f8f4e3319743da. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2sv2zLQheputMWCOsyzW6K.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/2sv2zLQheputMWCOsyzW6K.
{"copyright_id":"0x2c3de9ddd27c6502dba558afde61c42aaafdaedcc2ba8172f3727daea327606d","isrc":"QZPLS2247873","name":"He Would Say","registered_at":"2026-06-04T13:24:08Z","spotify_id":"4CtTBmB0HMLWhW1pbSs1DO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3de9ddd27c6502dba558afde61c42aaafdaedcc2ba8172f3727daea327606d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4CtTBmB0HMLWhW1pbSs1DO.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/4CtTBmB0HMLWhW1pbSs1DO.
{"copyright_id":"0x05cb53c77abdaddc5c5e7df9205cb07de7aef9a41a52ebd48cb148264400e229","isrc":"QZTB62362668","name":"Another Heartbreak","registered_at":"2026-06-27T17:53:56Z","spotify_id":"0lnUiYBiRrSoILd3ARtozm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cb53c77abdaddc5c5e7df9205cb07de7aef9a41a52ebd48cb148264400e229. 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/0lnUiYBiRrSoILd3ARtozm.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/0lnUiYBiRrSoILd3ARtozm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7bdf67ac6951d362724871006e846f84be5baa6e870f8b2612efd8fa9ef483. 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/3np0SvhoW0qyLeEA0flXYf.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/3np0SvhoW0qyLeEA0flXYf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdbcb59128fc57fa2f05f8133178cdd298423ba10d1d69880f8f4e3319743da. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0jTgazyU8A3deKMDpUbjyy.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/0jTgazyU8A3deKMDpUbjyy.
{"copyright_id":"0x2c3de9ddd27c6502dba558afde61c42aaafdaedcc2ba8172f3727daea327606d","isrc":"QZPLS2247873","name":"He Would Say","registered_at":"2026-06-04T13:24:08Z","spotify_id":"4FgGlGxZhMFfy7LmIAXPed","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3de9ddd27c6502dba558afde61c42aaafdaedcc2ba8172f3727daea327606d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4FgGlGxZhMFfy7LmIAXPed.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/4FgGlGxZhMFfy7LmIAXPed.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdbcb59128fc57fa2f05f8133178cdd298423ba10d1d69880f8f4e3319743da. 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/4EfihlpTAdpc5rawQIaR6c.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/4EfihlpTAdpc5rawQIaR6c.
{"copyright_id":"0x2c3de9ddd27c6502dba558afde61c42aaafdaedcc2ba8172f3727daea327606d","isrc":"QZPLS2247873","name":"He Would Say","registered_at":"2026-06-04T13:24:08Z","spotify_id":"4wVHeNrtAKSqqbsAG9rhju","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3de9ddd27c6502dba558afde61c42aaafdaedcc2ba8172f3727daea327606d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4wVHeNrtAKSqqbsAG9rhju.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/4wVHeNrtAKSqqbsAG9rhju.
{"copyright_id":"0x2c3de9ddd27c6502dba558afde61c42aaafdaedcc2ba8172f3727daea327606d","isrc":"QZPLS2247873","name":"He Would Say","registered_at":"2026-06-04T13:24:08Z","spotify_id":"75SiziGdpOQzJUstDpIXhZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3de9ddd27c6502dba558afde61c42aaafdaedcc2ba8172f3727daea327606d. 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/75SiziGdpOQzJUstDpIXhZ.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/75SiziGdpOQzJUstDpIXhZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dca2e1fd79b2944659af685243a77d7a362dbe6b09d89a31ae81a6f6193ae4c. 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/5VLuGQbFYpCdS7bqZCh4nM.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/5VLuGQbFYpCdS7bqZCh4nM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aca35106e6327afa49d7ca73f7db84372975ad5de429d9cc48977fb164f029. 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/39pFHim6FTT3rA3Tj73tT7.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/39pFHim6FTT3rA3Tj73tT7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14b62893a1899f707841f3a1104aa564880a26b4c458a418f9e13d233e9c3b2. 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/731FoDtsCeLZ9PSKN7Y03d.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/731FoDtsCeLZ9PSKN7Y03d.
{"copyright_id":"0x9066356d542badcb05fc225251897361feb4bfdcdb682ec8bbdfc5ea5f92efad","isrc":"QZ93L2108622","name":"On And Off","registered_at":"2026-06-04T11:42:58Z","spotify_id":"04saOuIMheHpTWmNyjKOLK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9066356d542badcb05fc225251897361feb4bfdcdb682ec8bbdfc5ea5f92efad. 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/04saOuIMheHpTWmNyjKOLK.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/04saOuIMheHpTWmNyjKOLK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06eecb67275c24b3d8c597b85bdba38a734b86ffd5b8e62c299ea23d3209f7e. 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/27XMMU7dxbEqKmCgLODmix.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/27XMMU7dxbEqKmCgLODmix.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ce1b05cb3adf3d090226f9c6d7f7f71f1a359d9d12b84288355dfd867c5470. 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/7A7BA7l3lLRqVAlPNm9o22.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/7A7BA7l3lLRqVAlPNm9o22.
{"copyright_id":"0xf92fb13bdfcfdea311e73aed1c3cfdb1da711aab4ca51f4acdf15bec296ea13f","isrc":"QZFZ32169888","name":"Wrong Direction","registered_at":"2026-06-04T11:31:27Z","spotify_id":"66SxGyWkD0VZSb8iZxl78H","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92fb13bdfcfdea311e73aed1c3cfdb1da711aab4ca51f4acdf15bec296ea13f. 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/66SxGyWkD0VZSb8iZxl78H.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/66SxGyWkD0VZSb8iZxl78H.
{"copyright_id":"0x13381d5ce06ea199d6b2d9c0ee5379fb41390c98612aaed0573b70ccf60fcae1","isrc":"QZHN82017781","name":"Golden Hour","registered_at":"2026-06-06T13:28:33Z","spotify_id":"2S6eEwofdZgkuTUmw4FLxk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13381d5ce06ea199d6b2d9c0ee5379fb41390c98612aaed0573b70ccf60fcae1. 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/2S6eEwofdZgkuTUmw4FLxk.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/2S6eEwofdZgkuTUmw4FLxk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab83c12fb14271c535681ecc69b66713740c099e0172411f3b105e7484cf5a7. 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/6i5tylayRLCg5LrgUFqg4Z.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/6i5tylayRLCg5LrgUFqg4Z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd83d240d7071f00e0eba828376cb747a1805c6b5f0a262029fc036c6f8358c4. 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/6BSLQbD2Uh8qVmbqm6oT2w.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/6BSLQbD2Uh8qVmbqm6oT2w.
Lounge Music 2023: The Best Music for Your Evening by Hoop Records