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 0xa56f170e8e3d55d0532e13a7021b22f0d98ab23e5d3ba0706581145585998db4. 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/edf5d5b1-a51b-4a3d-8272-77601cf62093.json and https://artists.proofprofile.net/proofs/artist/edf5d5b1-a51b-4a3d-8272-77601cf62093.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 0xe9be4c1aa0be64616dae0d656a472ee6fd341c51632e933c0949875843df1701. 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/0214nUjb7oo13ZC4MNzBAS.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/0214nUjb7oo13ZC4MNzBAS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a38cabaa244ef8b90b4889e75033258c5ac1c36013380323358652ac6d9798. 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/2auzuo8zERK7uP5uhYoA03.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/2auzuo8zERK7uP5uhYoA03.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f40ef9ef677185738cc323c3e9a7a8ab479127101b2cba0586fb8dad13c9574. 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/35RhFp88hKUnzQa3gvrqIC.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/35RhFp88hKUnzQa3gvrqIC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2921c923121186e3b2275bfe8bd45b87c68ffbaa5ac667cb0d4064515d362c39. 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/3Ig1Yt7WVp2z7D9FUFnX49.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/3Ig1Yt7WVp2z7D9FUFnX49.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726bd106f136be86fad639a1a556e0279f70279715e46020359b18461b27ff9d. 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/6aO0orZA8eFr0VN7RRg069.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/6aO0orZA8eFr0VN7RRg069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5887f4ea662600a84e850938125a6dd36ba71df2b73e8929b0f2f600a2a54fb. 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/0dcKnbCPclGrPI4GVTNWw3.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/0dcKnbCPclGrPI4GVTNWw3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98013dc964b712825bc4a43111c7ab8ee658864d1bd02e7ceee06662b9ae4bf1. 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/6IqG6ttfoncSkb5kPFJqcm.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/6IqG6ttfoncSkb5kPFJqcm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8670ee65c60e923e81332dc69c771902a80fc88fadccee738c690380efff1baa. 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/09jjORs2LOLZVGELW3xJ4B.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/09jjORs2LOLZVGELW3xJ4B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5e2b7805bf342bbb4a8dc284373d9174b669d6962e774ab1b0fcb0f048b568. 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/6N955cgqZZ2F1Ak5VQWpR7.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/6N955cgqZZ2F1Ak5VQWpR7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf52828850cc0efbf973184f06a20f44084c4ad3d6c80eee2effe5a5b0426ff. 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/1yW5VRBhU9SOb2sh7k6jbE.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/1yW5VRBhU9SOb2sh7k6jbE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc579169f69fcc95744d5ab1a1be786543b4f0f2df0531130ff7252bc47e1168. 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/2sZv5dNEC4DEuzmv6riiUU.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/2sZv5dNEC4DEuzmv6riiUU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8670ee65c60e923e81332dc69c771902a80fc88fadccee738c690380efff1baa. 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/1vjGEN7tKt0U2a8sHSoaya.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/1vjGEN7tKt0U2a8sHSoaya.
{"copyright_id":"0xb53bba1e438da046367211a46ee29c6539a63cded047c446adbb441aac7519c6","isrc":"QZ5FN2313432","name":"Awful Times","registered_at":"2026-06-05T23:26:45Z","spotify_id":"2mnCKWCuP6zPriJMwvVqN7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53bba1e438da046367211a46ee29c6539a63cded047c446adbb441aac7519c6. 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/2mnCKWCuP6zPriJMwvVqN7.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/2mnCKWCuP6zPriJMwvVqN7.
{"copyright_id":"0xfb01b9f58cba2c7411a4c4712b7a0aeefeb6c7abcc53f50cf7dd5e5b6a5224b4","isrc":"SE6SA2236890","name":"My Mind (RELOADED)","registered_at":"2026-06-09T10:58:18Z","spotify_id":"5MpDCx6uNyiiSc3hdu6bgu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb01b9f58cba2c7411a4c4712b7a0aeefeb6c7abcc53f50cf7dd5e5b6a5224b4. 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/5MpDCx6uNyiiSc3hdu6bgu.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/5MpDCx6uNyiiSc3hdu6bgu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271d9a0b1fd619f482baa34b4e7435f886132782a3fa90f07c93ef317510e913. 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/6kgDGzhr9gFLGtEeh9oL98.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/6kgDGzhr9gFLGtEeh9oL98.
{"copyright_id":"0x4808310b2f5ef292aff33fdac75ec3c92ea76384a44d20c2b5be96560eb34d9f","isrc":"USX9P2000237","name":"Call Me","registered_at":"2026-06-10T07:21:23Z","spotify_id":"4BnlMYgPZjCdB8MTkmSKEP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4808310b2f5ef292aff33fdac75ec3c92ea76384a44d20c2b5be96560eb34d9f. 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/4BnlMYgPZjCdB8MTkmSKEP.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/4BnlMYgPZjCdB8MTkmSKEP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7107565a5680ecb182489430a2c20855055e027631dbe1eeeb976c2988cad8. 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/1FKK7cg8RyQ21YFtm5DwA8.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/1FKK7cg8RyQ21YFtm5DwA8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eca018b863bc5c0ed1d27a1aaa0a7364a1392f6b7f41b990e14d8b8886b32a4. 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/6DFytyqS6I6BIwL2anrcup.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/6DFytyqS6I6BIwL2anrcup.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1021b1847aaedf94d64454a35838bec38de0ddc5784169b607979026151a0f74. 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/1Jyi3zVawDvbhRTHNgfV7x.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/1Jyi3zVawDvbhRTHNgfV7x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445e456294ba6fd68634e7fa48017a627e2cd8102a1937d8ba844e78cf6c7116. 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/62GManowyWGR7356UWlztx.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/62GManowyWGR7356UWlztx.
{"copyright_id":"0xbac0053790c817b452ccef788c9e26bcee0bd832e86fe43a7edbe11e532079c3","isrc":"GBSMU8678328","name":"You Don't Believe","registered_at":"2026-06-09T20:48:25Z","spotify_id":"4CTh8ZBZvLpm9MfVsm0wp1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac0053790c817b452ccef788c9e26bcee0bd832e86fe43a7edbe11e532079c3. 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/4CTh8ZBZvLpm9MfVsm0wp1.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/4CTh8ZBZvLpm9MfVsm0wp1.