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 0x35d99ace4ab11371dbcc6d715df15d5808e3758232436463d021814132c2597e. 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/29133b55-107d-4d69-85dd-47413bce7c95.json and https://artists.proofprofile.net/proofs/artist/29133b55-107d-4d69-85dd-47413bce7c95.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 0x331cf2a63482450d811dabb86044be7edb177020f76ce334d3d792a179cfb971. 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/0KkCQEj9RMsgUfbVnOZzX8.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/0KkCQEj9RMsgUfbVnOZzX8.
{"copyright_id":"0x74774eecdb60e6040f269a38ff2b0c01b026bbc4e4e770adfeece1de82f7e349","isrc":"USA2P2448554","name":"Hurt Me Now","registered_at":"2026-06-05T21:16:21Z","spotify_id":"4wOkwWQXcyq5jypfszaIUS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74774eecdb60e6040f269a38ff2b0c01b026bbc4e4e770adfeece1de82f7e349. 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/4wOkwWQXcyq5jypfszaIUS.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/4wOkwWQXcyq5jypfszaIUS.
{"copyright_id":"0xd5de85bddf19731627c072fd44cd51f8b12ac70b6ed85916cf994f29349b16ef","isrc":"USA2P2448555","name":"I'm Not A Machine","registered_at":"2026-06-06T16:46:26Z","spotify_id":"4NQZhdQzZuNqafgKvn2Amr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5de85bddf19731627c072fd44cd51f8b12ac70b6ed85916cf994f29349b16ef. 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/4NQZhdQzZuNqafgKvn2Amr.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/4NQZhdQzZuNqafgKvn2Amr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8558de800b48ebfe6a7e5570406d2e6ae727eb44b4145de5d3650f83f0b96a69. 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/28buJ7hywePvA0oyQFTLrO.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/28buJ7hywePvA0oyQFTLrO.
{"copyright_id":"0xe08074e83d141da41465e47cbb60dc11d31214aa662f10b7d91ccd34fd6879fb","isrc":"USA2P2448557","name":"Mona Lisa On A Mattress","registered_at":"2026-06-04T16:20:41Z","spotify_id":"4JzfmkymZEPCBa5sEU1XuF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08074e83d141da41465e47cbb60dc11d31214aa662f10b7d91ccd34fd6879fb. 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/4JzfmkymZEPCBa5sEU1XuF.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/4JzfmkymZEPCBa5sEU1XuF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac280c71abe833bf701cc1811451773a5b636b268d7e72e2e6f82db34f7911b. 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/3r00gsFTrk4e8KS49XLutK.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/3r00gsFTrk4e8KS49XLutK.
{"copyright_id":"0x4d50cebdcb3f51837fa496ed3a8d5ab51c576349dc27a9a296df647dca6f7a80","isrc":"USA2P2448559","name":"Growing Pains","registered_at":"2026-06-07T12:59:19Z","spotify_id":"3umBpkDxmfCsGKN17xayd0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d50cebdcb3f51837fa496ed3a8d5ab51c576349dc27a9a296df647dca6f7a80. 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/3umBpkDxmfCsGKN17xayd0.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/3umBpkDxmfCsGKN17xayd0.
{"copyright_id":"0xe589584117769db0a0b1615bd2a3da0d696ae79d0d8e9b4aa40b0d49189c1dac","isrc":"USA2P2448560","name":"Shut It Off","registered_at":"2026-06-06T10:09:55Z","spotify_id":"1eYYo4b6JdcEFajlxlynSd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe589584117769db0a0b1615bd2a3da0d696ae79d0d8e9b4aa40b0d49189c1dac. 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/1eYYo4b6JdcEFajlxlynSd.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/1eYYo4b6JdcEFajlxlynSd.
{"copyright_id":"0x30273311fc781aa6757e50ed49c8bc0afa1caf58354b7cc4213d027eaefc136d","isrc":"USA2P2448561","name":"Isolated Love (feat. Travis Barker)","registered_at":"2026-06-07T19:37:39Z","spotify_id":"7szLTdXf2XAcWopTqvIrbc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30273311fc781aa6757e50ed49c8bc0afa1caf58354b7cc4213d027eaefc136d. 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/7szLTdXf2XAcWopTqvIrbc.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/7szLTdXf2XAcWopTqvIrbc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc39b2aea44ff8f3a26088bdbdb539b769b7dba4ee7c30f27b2247fd5f7027b. 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/1sAA04wp8JeoZ0bLkKC89p.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/1sAA04wp8JeoZ0bLkKC89p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa5018e7aeb9141d489c8ef0488cdb04017cc7142c9fd1512bd1bcd7678b701. 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/3mRLHiSHYtC8Hk7bzZdUs1.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/3mRLHiSHYtC8Hk7bzZdUs1.
{"copyright_id":"0x3a56c67a3911e83e43f1a87a4b7e7fbce70e06e3b9a5e8078b9f90917066be5d","isrc":"USUG11701764","name":"So Tied Up - Stint Remix","registered_at":"2026-06-05T06:56:07Z","spotify_id":"6i9EhwGlQIUcZUAxrZ4Sdu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a56c67a3911e83e43f1a87a4b7e7fbce70e06e3b9a5e8078b9f90917066be5d. 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/6i9EhwGlQIUcZUAxrZ4Sdu.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/6i9EhwGlQIUcZUAxrZ4Sdu.
{"copyright_id":"0x000b1feeb58db3c8fe7b3a8de70f333aed1e6560b2903a6623a5729c09700dcf","isrc":"USUG11701763","name":"So Tied Up - Hanni El Khatib Remix","registered_at":"2026-06-21T19:52:24Z","spotify_id":"4bCmf4UDdn2Uz5hr4xvtTM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000b1feeb58db3c8fe7b3a8de70f333aed1e6560b2903a6623a5729c09700dcf. 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/4bCmf4UDdn2Uz5hr4xvtTM.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/4bCmf4UDdn2Uz5hr4xvtTM.
{"copyright_id":"0x95a7a5e7a1515381c8180ceda49a164b8972f7b48b7c22d8d3bb65ea1d91c9e3","isrc":"USUG11701705","name":"So Tied Up - moreBishop","registered_at":"2026-06-07T05:07:01Z","spotify_id":"4IX15vcT5ZqDY7AlQcPB9a","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a7a5e7a1515381c8180ceda49a164b8972f7b48b7c22d8d3bb65ea1d91c9e3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4IX15vcT5ZqDY7AlQcPB9a.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/4IX15vcT5ZqDY7AlQcPB9a.
So Tied Up - Colin Callahan Bigroom Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75834963d3a78d79ef8100691f99c30c55b453b6188218c04cf2807b5e4801c. 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/3msS7xaelR4Oa0n7IwHkgF.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/3msS7xaelR4Oa0n7IwHkgF.
{"copyright_id":"0x95a7a5e7a1515381c8180ceda49a164b8972f7b48b7c22d8d3bb65ea1d91c9e3","isrc":"USUG11701705","name":"So Tied Up - moreBishop","registered_at":"2026-06-07T05:07:01Z","spotify_id":"3oDSB0S0M9Ozhm2nYrpYvO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a7a5e7a1515381c8180ceda49a164b8972f7b48b7c22d8d3bb65ea1d91c9e3. 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/3oDSB0S0M9Ozhm2nYrpYvO.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/3oDSB0S0M9Ozhm2nYrpYvO.
{"copyright_id":"0x9e7330ed2fdd49c8254fad89ceecd9032c0368b63e6f26bf0a8a64f78ff9df4b","isrc":"USUG11700923","name":"So Tied Up - Los Feliz Blvd","registered_at":"2026-06-11T23:32:05Z","spotify_id":"47S9EnOcpJTTgauZF7MoY9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7330ed2fdd49c8254fad89ceecd9032c0368b63e6f26bf0a8a64f78ff9df4b. 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/47S9EnOcpJTTgauZF7MoY9.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/47S9EnOcpJTTgauZF7MoY9.
{"copyright_id":"0x536f0ed0dd4a4717a73dc11d8e751c714dd350fb55b725a4a96807b16e3160b5","isrc":"USUG11700598","name":"Love On The Brain - Los Feliz Blvd","registered_at":"2026-06-05T10:55:49Z","spotify_id":"6OwXs1QpJhs1TqLCBYT2Gt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536f0ed0dd4a4717a73dc11d8e751c714dd350fb55b725a4a96807b16e3160b5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6OwXs1QpJhs1TqLCBYT2Gt.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/6OwXs1QpJhs1TqLCBYT2Gt.
{"copyright_id":"0x536f0ed0dd4a4717a73dc11d8e751c714dd350fb55b725a4a96807b16e3160b5","isrc":"USUG11700598","name":"Love On The Brain - Los Feliz Blvd","registered_at":"2026-06-05T10:55:49Z","spotify_id":"135EP4qT9Eo0Uu0fMIln2c","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536f0ed0dd4a4717a73dc11d8e751c714dd350fb55b725a4a96807b16e3160b5. 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/135EP4qT9Eo0Uu0fMIln2c.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/135EP4qT9Eo0Uu0fMIln2c.
Four Weddings And A Funeral (Music From The Original TV Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65c531ef650e1800678cbd8a69e4cf0d271271bb137ff3d3508decd21eb2dbf. 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/4Igc8wKf3ak0h3ote47njd.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/4Igc8wKf3ak0h3ote47njd.
FIFTY SHADES OF GREY - Befreite Lust (Original Motion Picture Soundtrack)