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 0xff68b6c6b2fb02a0fc12cfcbd80010db002739070538f90e425b1aa645313ec1. 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/ba64b53c-2874-4aa9-ab98-da3a6bd62455.json and https://artists.proofprofile.net/proofs/artist/ba64b53c-2874-4aa9-ab98-da3a6bd62455.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x2a73c7235aa2032288b3daa979e924dd445fafed4fb554aa3fb7d2de030e9336","isrc":"SEXGF2157901","name":"Cozy Thunder And Rain - Seamless","registered_at":"2026-06-01T06:40:28Z","spotify_id":"2QtHxdxJ5Dc2eVHEfPA079","type":"track"}
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 0x2a73c7235aa2032288b3daa979e924dd445fafed4fb554aa3fb7d2de030e9336. 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/2QtHxdxJ5Dc2eVHEfPA079.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/2QtHxdxJ5Dc2eVHEfPA079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928537f294498552c0878bcafdd880b455cc3815638102de11d9b05118c94e86. 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/1z2SamWUDURKbRk4lsJqDG.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/1z2SamWUDURKbRk4lsJqDG.
{"copyright_id":"0x4a9385ed29bf961564e99395e36fd0d0a6db65ca07b0b71c48136868e0a5b0e6","isrc":"SEXGF2157903","name":"Cozy Calming Nocturnal Rain - Seamless","registered_at":"2026-06-04T15:15:57Z","spotify_id":"4sY36A3vJkDKNj00YBOSEf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9385ed29bf961564e99395e36fd0d0a6db65ca07b0b71c48136868e0a5b0e6. 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/4sY36A3vJkDKNj00YBOSEf.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/4sY36A3vJkDKNj00YBOSEf.
{"copyright_id":"0x557a754f8262d50c633adf5d2bd050c20ccbc52e6d931ca3b9155ba5f3871a23","isrc":"SEXGF2157904","name":"Cozy Calming Nocturnal Rain","registered_at":"2026-06-01T14:10:33Z","spotify_id":"7yfJG16maztJXFzCQ3RJEa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557a754f8262d50c633adf5d2bd050c20ccbc52e6d931ca3b9155ba5f3871a23. 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/7yfJG16maztJXFzCQ3RJEa.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/7yfJG16maztJXFzCQ3RJEa.
{"copyright_id":"0x023637e5e8f62278112a6ee4547ae5a9aede2ed465e344a10f85a36b4686dfc7","isrc":"SEXGF2398730","name":"Nocturnal Comfort Rain","registered_at":"2026-06-10T13:34:31Z","spotify_id":"6muNBF1eOH80X44qRcTix6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023637e5e8f62278112a6ee4547ae5a9aede2ed465e344a10f85a36b4686dfc7. 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/6muNBF1eOH80X44qRcTix6.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/6muNBF1eOH80X44qRcTix6.
{"copyright_id":"0xe85c42791cd2e97ab28aa795a3103613ec4916392757c2da6d39a6e49cbf5d0f","isrc":"SEXGF2398731","name":"Evening Forest Rain","registered_at":"2026-06-25T05:32:17Z","spotify_id":"2DEItTIbjIJm9rW3iQRYEV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85c42791cd2e97ab28aa795a3103613ec4916392757c2da6d39a6e49cbf5d0f. 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/2DEItTIbjIJm9rW3iQRYEV.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/2DEItTIbjIJm9rW3iQRYEV.
{"copyright_id":"0xb312e33750a3c35bb303a4c5abb63116d31e97acc21cdaf6e98009abf9ef39f8","isrc":"SEXGF2301229","name":"Nocturnal Cosy Rain","registered_at":"2026-06-26T13:14:08Z","spotify_id":"5w2EVmOHGxSapn3tORkHGg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb312e33750a3c35bb303a4c5abb63116d31e97acc21cdaf6e98009abf9ef39f8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5w2EVmOHGxSapn3tORkHGg.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/5w2EVmOHGxSapn3tORkHGg.
{"copyright_id":"0x3aadbbb7e8332c5c16b5e4d9bca37b8f6da6ede91093728b5874282eb7757419","isrc":"SEXGF2301231","name":"Even Evening Rain","registered_at":"2026-06-26T13:16:40Z","spotify_id":"7fAdUHCwg3zzSdXRd4EAaa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aadbbb7e8332c5c16b5e4d9bca37b8f6da6ede91093728b5874282eb7757419. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7fAdUHCwg3zzSdXRd4EAaa.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/7fAdUHCwg3zzSdXRd4EAaa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1a85cc9139d647fd24af2d15d142702f136f404ef370ad9074daf553022080. 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/3ffTRqN8NLG5uTKUYvFpUG.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/3ffTRqN8NLG5uTKUYvFpUG.
{"copyright_id":"0x70774d9e6d4fe565a5d2c4be81215169ae6725af90fdfac40f5db5bae5967950","isrc":"SEXGF2203746","name":"Softest Night Rain","registered_at":"2026-06-01T20:58:18Z","spotify_id":"6rFnSfkEDYHXCNd4v7l94b","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70774d9e6d4fe565a5d2c4be81215169ae6725af90fdfac40f5db5bae5967950. 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/6rFnSfkEDYHXCNd4v7l94b.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/6rFnSfkEDYHXCNd4v7l94b.
{"copyright_id":"0xa59503f9a3f945ae7acda5bb5c36accf076a14a801dd76850ce1980ceb0fc27f","isrc":"SEXGF2398005","name":"Dreary Weather","registered_at":"2026-06-05T06:50:59Z","spotify_id":"6DAspKyJW32ShusALvQqFu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59503f9a3f945ae7acda5bb5c36accf076a14a801dd76850ce1980ceb0fc27f. 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/6DAspKyJW32ShusALvQqFu.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/6DAspKyJW32ShusALvQqFu.
{"copyright_id":"0x340fab597f65a1d304026f6d1663b01f09098fdafdcf4b68da10828fb6fc402a","isrc":"SEXGF2398006","name":"Dreary Weather - Seamless","registered_at":"2026-06-10T01:57:57Z","spotify_id":"3UDAwIDkA27GG84NdqGqJD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340fab597f65a1d304026f6d1663b01f09098fdafdcf4b68da10828fb6fc402a. 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/3UDAwIDkA27GG84NdqGqJD.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/3UDAwIDkA27GG84NdqGqJD.