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 0x1ec12224197e0f0e27d0fadf6f4d7f5fe1a979684d5ca77653c608d8e7091169. 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/40773b6c-7cbb-4b64-86d6-2b966cb0cd3b.json and https://artists.proofprofile.net/proofs/artist/40773b6c-7cbb-4b64-86d6-2b966cb0cd3b.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 0x32ecf5cb0fe1c4ce2f0ac7d03d01977c3c603d738b9fcfa86c9efb7e180f036a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6lyBE0xAODiYQPDHgJg6vc.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/6lyBE0xAODiYQPDHgJg6vc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ecf5cb0fe1c4ce2f0ac7d03d01977c3c603d738b9fcfa86c9efb7e180f036a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3EpqAosa7SNDSGJpRbkGp1.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/3EpqAosa7SNDSGJpRbkGp1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d34ea3dc1ef123432d2ce82f41a022d48d71186b1a6fd0cb91078bdbd425b1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4AaEN8yblTwezpIgNrLWJa.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/4AaEN8yblTwezpIgNrLWJa.
{"copyright_id":"0x85ac9e8ff24cb4fbcdc53dbdb5aae73e8cdae3219f72825a1f953876c3ca4452","isrc":"QZDA82268751","name":"ES7ÁDIO (feat. Rafaell Dior, T-Rex)","registered_at":"2026-06-06T07:10:50Z","spotify_id":"5qOxKca1xlzGXszFsszVyb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ac9e8ff24cb4fbcdc53dbdb5aae73e8cdae3219f72825a1f953876c3ca4452. 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/5qOxKca1xlzGXszFsszVyb.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/5qOxKca1xlzGXszFsszVyb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4602431027c0d56377da3d1f10bba7134d099c4ecab12f5067b32867b782ef10. 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/483xioZrkATeN5n7K5e9CA.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/483xioZrkATeN5n7K5e9CA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f5391bc6e31a060740a1c81e3ade9ffcdc75ab74bea61cc586a30736ab797a. 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/5gFn36brstcvf9a6V3v571.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/5gFn36brstcvf9a6V3v571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa0557850daaf883463d308f615fe6245981a167d6365cd04db16bb83d37dd4. 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/5c1bjb02W5RvCRdnkykQIn.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/5c1bjb02W5RvCRdnkykQIn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b79d2b707f1d20d984a1d80fb222107850365ca886cd046df7b23bcb65f3c3. 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/77dI2GFNHW6PICwZmabYRa.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/77dI2GFNHW6PICwZmabYRa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551a0eba206f9a76c768e7a3af13b57ae90162a05d3751c2200acdbf6e52eb8d. 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/7EPTHnLV8k01st4WcPrhvI.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/7EPTHnLV8k01st4WcPrhvI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438003ec29258248d904b54a20e8e251a6cf76a9cc4f6c451a615c7decf12916. 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/7DeZ1G1CjUBfyMI247r2FE.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/7DeZ1G1CjUBfyMI247r2FE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d34ea3dc1ef123432d2ce82f41a022d48d71186b1a6fd0cb91078bdbd425b1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Lp60CCalUAhzikOD2JszZ.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/6Lp60CCalUAhzikOD2JszZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438003ec29258248d904b54a20e8e251a6cf76a9cc4f6c451a615c7decf12916. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5R6FFsonAsAewUnAvlrpSA.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/5R6FFsonAsAewUnAvlrpSA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0627225505b4b025aad1c7848dba95067fc48e7537b98b95ae4ff3f859db1443. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2DOZfgN1oKot6e8t7W9VSn.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/2DOZfgN1oKot6e8t7W9VSn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f66b3a5463e7c79686fa7b8399ef01bd5aa3590887d15239eaaefd62faa21ca. 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/5SoSdBOHglrP42T7uNpiCE.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/5SoSdBOHglrP42T7uNpiCE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031a6273004076896f6318dfbc161c53213bbf79d935e8594d5974c9a6780d27. 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/5PCCUFryyfpbrQrRj0W7eh.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/5PCCUFryyfpbrQrRj0W7eh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0627225505b4b025aad1c7848dba95067fc48e7537b98b95ae4ff3f859db1443. 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/5eCf2qeNOPS2N8xPxSCPFs.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/5eCf2qeNOPS2N8xPxSCPFs.
{"copyright_id":"0xe67b0971d4bbb27341b8cf81b8aeff47318d6f86063d01885ea7fb7da702dc8d","isrc":"PT2HP2400007","name":"VALENCIA (feat. Yung Juse)","registered_at":"2026-06-10T06:47:50Z","spotify_id":"5H6YEMnwAiv0i9xnqTCpX4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67b0971d4bbb27341b8cf81b8aeff47318d6f86063d01885ea7fb7da702dc8d. 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/5H6YEMnwAiv0i9xnqTCpX4.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/5H6YEMnwAiv0i9xnqTCpX4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f66b3a5463e7c79686fa7b8399ef01bd5aa3590887d15239eaaefd62faa21ca. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5wTx5WJ99XcauRO9xzhz9f.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/5wTx5WJ99XcauRO9xzhz9f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f109aad1c2d2fa919c215766ef928c301a9bb45080b26bbc1ed581b6541972. 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/1fcIC2i4BeqYTZWKDjyeC9.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/1fcIC2i4BeqYTZWKDjyeC9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269b86cb23204f3a112458666db09c792b8c174a750b0189a2958c3b44cea3c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5VzBXAaBPujuiwu6VfDnOE.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/5VzBXAaBPujuiwu6VfDnOE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269b86cb23204f3a112458666db09c792b8c174a750b0189a2958c3b44cea3c. 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/5Qq9kMmuxwyPL5IvJvyi34.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/5Qq9kMmuxwyPL5IvJvyi34.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269b86cb23204f3a112458666db09c792b8c174a750b0189a2958c3b44cea3c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0fkodYYldQn1tLQ0l42F4e.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/0fkodYYldQn1tLQ0l42F4e.