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 0xd35fd3a871b156bd182d5cfa0812aecdaa2db451ea401f6b6eb5f366b11422df. 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/7c4fe809-5545-41ac-a7b7-5bdadda7b6e4.json and https://artists.proofprofile.net/proofs/artist/7c4fe809-5545-41ac-a7b7-5bdadda7b6e4.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 0xe60999b233c3972f76cb166df41fb64330d4b6945aa68dc5ce41a6240af31916. 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/0ZeeLH3BSh4vqUey0e8Nkh.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/0ZeeLH3BSh4vqUey0e8Nkh.
{"copyright_id":"0x9f43a2745cc1f4e38ce32b03742cee7b10841ffec66712524194e65b4d586deb","isrc":"HUMAG2013037","name":"Nekem ez jár (feat. Pápai Joci)","registered_at":"2026-06-05T09:59:09Z","spotify_id":"0mk5VMmwmbGkPA4eg6qktR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f43a2745cc1f4e38ce32b03742cee7b10841ffec66712524194e65b4d586deb. 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/0mk5VMmwmbGkPA4eg6qktR.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/0mk5VMmwmbGkPA4eg6qktR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6641adaf8e67c9c430287827b9802090a576d546820bc78b3b7b61bfbd20c825. 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/6u8GxYP602BdI67dUK4Bn6.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/6u8GxYP602BdI67dUK4Bn6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89437795bc04f6d1206d8a73a2933eed7653fe65fc88ceb3f87a49a890b1d508. 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/4mhhm8PwlRNxDJTVU6O5gr.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/4mhhm8PwlRNxDJTVU6O5gr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682a3731151ea3f8ff1df4d440c44ed383b03260188a414dbd7721a5ad7d9847. 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/1wk8glJPerrXBpvbAfMDCd.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/1wk8glJPerrXBpvbAfMDCd.
{"copyright_id":"0x3534d4e16db8693b3d3c7df970bfadeaa9f5515bdb002439e34650a9c56e4ef7","isrc":"HUMAG2012203","name":"Szotyi van","registered_at":"2026-06-20T12:51:15Z","spotify_id":"2KmLPHp5swx3jUMSZxqjJ2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3534d4e16db8693b3d3c7df970bfadeaa9f5515bdb002439e34650a9c56e4ef7. 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/2KmLPHp5swx3jUMSZxqjJ2.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/2KmLPHp5swx3jUMSZxqjJ2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0117956963369dc687c14659a05041f182a19764f7bcc888fc2984debe1a2f. 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/1vpifq6jOF8OJSDYhUGTfM.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/1vpifq6jOF8OJSDYhUGTfM.
{"copyright_id":"0x054f1d206a4ff27e4cdf8deb4e032fbca5db5ed3802adc3cfbb94d6014571c2a","isrc":"HUMAG2012205","name":"Bomba vagy Baby (Belehalok)","registered_at":"2026-06-08T14:52:32Z","spotify_id":"1bnXvHuXMwKdl95mj48GQp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054f1d206a4ff27e4cdf8deb4e032fbca5db5ed3802adc3cfbb94d6014571c2a. 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/1bnXvHuXMwKdl95mj48GQp.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/1bnXvHuXMwKdl95mj48GQp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6972d732e27974aeed2101f1f179d8b8fca6acb304e0871aeba75603d469d40. 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/5nrpN923fDbupNaiuuXauM.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/5nrpN923fDbupNaiuuXauM.
{"copyright_id":"0x872cc4161012a1f097242ce84eeae0759acc889d5790d798ed54cffdfc33f95d","isrc":"HUMAG2012207","name":"Ilyen a box","registered_at":"2026-06-07T22:26:27Z","spotify_id":"6ym9wyZSL35RRmAJfONHBu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872cc4161012a1f097242ce84eeae0759acc889d5790d798ed54cffdfc33f95d. 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/6ym9wyZSL35RRmAJfONHBu.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/6ym9wyZSL35RRmAJfONHBu.
{"copyright_id":"0xd35bfddb5bd96ec3491fe84be8e27107fb2f2acb1de42570bb906120501b16c9","isrc":"HUMAG2012208","name":"Ezek a lányok egyre vékonyabbak","registered_at":"2026-06-06T19:32:53Z","spotify_id":"0VuGjJ9UDCSMwaevENbg3t","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35bfddb5bd96ec3491fe84be8e27107fb2f2acb1de42570bb906120501b16c9. 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/0VuGjJ9UDCSMwaevENbg3t.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/0VuGjJ9UDCSMwaevENbg3t.
{"copyright_id":"0x62bedaef0ae2252fa12b71424f292a6f75c66cce4db06fdce64904bd56c91de6","isrc":"HUMAG2012209","name":"R' n' B All Stars (Tedd fel)","registered_at":"2026-06-07T15:44:22Z","spotify_id":"5StEYcsZ0phCSObXS4oOae","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bedaef0ae2252fa12b71424f292a6f75c66cce4db06fdce64904bd56c91de6. 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/5StEYcsZ0phCSObXS4oOae.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/5StEYcsZ0phCSObXS4oOae.
{"copyright_id":"0x2f502cb5096a3222fa5bf18cdc8dd1fc0c6ffebbc0e166d38347d6aa28954896","isrc":"HUMAG2012210","name":"A rajongó","registered_at":"2026-06-22T10:34:52Z","spotify_id":"02OxgNSWYQVBmU3OgJsu2a","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f502cb5096a3222fa5bf18cdc8dd1fc0c6ffebbc0e166d38347d6aa28954896. 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/02OxgNSWYQVBmU3OgJsu2a.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/02OxgNSWYQVBmU3OgJsu2a.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c85161b4151aac96c7dd074133994619b221ca66e06148920fd0e572379d8df. 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/2Q0U7dnTohEErKO3X4cpi8.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/2Q0U7dnTohEErKO3X4cpi8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911056deafe733079fa0c7519a982c9be2e7f1bb8f17cd3c2a2648ac034dce62. 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/600mkkQEL5po7b4lQRMfO8.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/600mkkQEL5po7b4lQRMfO8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03577fef614e6a38ae479907d1503b2e0856ecb96ed6651369c69440e21c6501. 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/5nhRwALDXLs9jpEYc7M2UA.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/5nhRwALDXLs9jpEYc7M2UA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4254d89b6934bcc9c54c70cbf8bc92515eb147aae6f9ff3746072fa722cc79e3. 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/4ilUhF88EdR8U3bX04ccdA.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/4ilUhF88EdR8U3bX04ccdA.