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 0xd0dbcad2282644de9d5eecccc66cc24b4e81cfbc088d4488d61be92a707432a9. 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/567b2d95-a2b0-4f8f-8799-67103e1e78f9.json and https://artists.proofprofile.net/proofs/artist/567b2d95-a2b0-4f8f-8799-67103e1e78f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x95f51c401147febf6c01659fb5ad969976f55ffcf03afe6b91a0eb1c322c0a56","isrc":"BC3RD2300003","name":"Sai Da Frente","registered_at":"2026-06-04T12:05:32Z","spotify_id":"3OirlIOGwFgwcQgVru6IUG","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 0x95f51c401147febf6c01659fb5ad969976f55ffcf03afe6b91a0eb1c322c0a56. 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/3OirlIOGwFgwcQgVru6IUG.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/3OirlIOGwFgwcQgVru6IUG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfb6b873ba2ae861ac203eb401dbc667057930a4d3806ea89cb1b1808831563. 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/5WV6br0BPUzhJwyBty80s0.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/5WV6br0BPUzhJwyBty80s0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af434f42a6190f275f708561bc008ccc733949ece63cd9d36080b253e91a2a5. 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/33Q8doEKwVKd0MZtlLWOWu.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/33Q8doEKwVKd0MZtlLWOWu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5fb79b8e210f25eff5ab21299e8dab41a1e9a4a5bba8fad36fc229d7895c62. 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/2J4nJffXU569d2ld9yxH6D.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/2J4nJffXU569d2ld9yxH6D.
{"copyright_id":"0x5d3aebd862acf9624f240cdda387fae7251cab509eb828d9aeb1ca0b184679eb","isrc":"BC3RD2300017","name":"Nós Dois Depois","registered_at":"2026-06-04T12:57:24Z","spotify_id":"3G3KSfHeLK8oQWxM26v63Y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3aebd862acf9624f240cdda387fae7251cab509eb828d9aeb1ca0b184679eb. 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/3G3KSfHeLK8oQWxM26v63Y.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/3G3KSfHeLK8oQWxM26v63Y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bf401694f909bab4891a5cf73a068941be4766a73ac0c522f60e2ac3586671. 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/6cZDl8ZJKjAg1MV8Vo0E5m.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/6cZDl8ZJKjAg1MV8Vo0E5m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df68f6a6989414add9eae1677c4a390a8f3c166163b0f5e8484ee44f21e90c3. 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/4bp7bLSGWNj1n74rh5TwHW.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/4bp7bLSGWNj1n74rh5TwHW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b36822fc938e0ab343db38bd402feba862252c96e4e5d5df5f4d06221eeda94. 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/1Uz8BUDCVSAJNx7nkPhQJL.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/1Uz8BUDCVSAJNx7nkPhQJL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f13cecce912313b095d463a1514568f7da120c1ec329523513e6dd2601098f1. 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/1ivmFNc4ZXfxQFr7XckDMW.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/1ivmFNc4ZXfxQFr7XckDMW.
Dengo Meu (Ao Vivo na Prainha da Claudinha)
{"copyright_id":"0x303521d110aaad5f33d09c57a776a48e5d1019b4bb3177ce2fb4c296dc267373","isrc":"BCCIW2200021","name":"Dengo Meu (Ao Vivo na Prainha da Claudinha)","registered_at":"2026-06-10T04:01:17Z","spotify_id":"36JzL4qpX1MpSAJ5QdLv41","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303521d110aaad5f33d09c57a776a48e5d1019b4bb3177ce2fb4c296dc267373. 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/36JzL4qpX1MpSAJ5QdLv41.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/36JzL4qpX1MpSAJ5QdLv41.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab278517846dac28db584e0217b4ffc19b56e0f9f553618e5b88660f93f3764e. 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/7m4EYPEEFkhI5aEsM5Tgo0.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/7m4EYPEEFkhI5aEsM5Tgo0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af434f42a6190f275f708561bc008ccc733949ece63cd9d36080b253e91a2a5. 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/6eWx9pOK1JkIhUjeVmGYJr.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/6eWx9pOK1JkIhUjeVmGYJr.
{"copyright_id":"0x214870bca7ac5da84f68e7b950ac0cfeb43f4ce4ad187276da1da1585d645bff","isrc":"BC3RD2300015","name":"Falta De Atenção","registered_at":"2026-06-05T15:24:23Z","spotify_id":"4KPZyTXOMkBxCo2e4KXbDf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214870bca7ac5da84f68e7b950ac0cfeb43f4ce4ad187276da1da1585d645bff. 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/4KPZyTXOMkBxCo2e4KXbDf.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/4KPZyTXOMkBxCo2e4KXbDf.
{"copyright_id":"0xa9bf401694f909bab4891a5cf73a068941be4766a73ac0c522f60e2ac3586671","isrc":"BC3RD2300009","name":"Não Sou De Falar De Amor","registered_at":"2026-06-04T10:45:42Z","spotify_id":"6KbC4mll3Pto7dTaLLiAUU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bf401694f909bab4891a5cf73a068941be4766a73ac0c522f60e2ac3586671. 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/6KbC4mll3Pto7dTaLLiAUU.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/6KbC4mll3Pto7dTaLLiAUU.
{"copyright_id":"0x13fbcc068cc6ff17d51ae8c700a595a785c39ef14359b7cff01706144acb3550","isrc":"BRUM72300405","name":"Péssimo Negócio - Ao Vivo","registered_at":"2026-06-04T07:26:43Z","spotify_id":"7sfHSsUVJ9uFuTx7ziKvVG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fbcc068cc6ff17d51ae8c700a595a785c39ef14359b7cff01706144acb3550. 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/7sfHSsUVJ9uFuTx7ziKvVG.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/7sfHSsUVJ9uFuTx7ziKvVG.
{"copyright_id":"0x13fbcc068cc6ff17d51ae8c700a595a785c39ef14359b7cff01706144acb3550","isrc":"BRUM72300405","name":"Péssimo Negócio - Ao Vivo","registered_at":"2026-06-04T07:26:43Z","spotify_id":"4sP2d0BcT6vjFFZyzrlJuc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fbcc068cc6ff17d51ae8c700a595a785c39ef14359b7cff01706144acb3550. 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/4sP2d0BcT6vjFFZyzrlJuc.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/4sP2d0BcT6vjFFZyzrlJuc.
{"copyright_id":"0x13fbcc068cc6ff17d51ae8c700a595a785c39ef14359b7cff01706144acb3550","isrc":"BRUM72300405","name":"Péssimo Negócio - Ao Vivo","registered_at":"2026-06-04T07:26:43Z","spotify_id":"23Hk7rLQ10RORyrleVpl4L","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fbcc068cc6ff17d51ae8c700a595a785c39ef14359b7cff01706144acb3550. 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/23Hk7rLQ10RORyrleVpl4L.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/23Hk7rLQ10RORyrleVpl4L.
{"copyright_id":"0x13fbcc068cc6ff17d51ae8c700a595a785c39ef14359b7cff01706144acb3550","isrc":"BRUM72300405","name":"Péssimo Negócio - Ao Vivo","registered_at":"2026-06-04T07:26:43Z","spotify_id":"3mTXgaxzV2qzApq5MLARaZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fbcc068cc6ff17d51ae8c700a595a785c39ef14359b7cff01706144acb3550. 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/3mTXgaxzV2qzApq5MLARaZ.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/3mTXgaxzV2qzApq5MLARaZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab278517846dac28db584e0217b4ffc19b56e0f9f553618e5b88660f93f3764e. 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/38KqHHwmrvlfPO7t4OcSMm.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/38KqHHwmrvlfPO7t4OcSMm.