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 0x93c8a00651fb1f62157664e53dc5c7d5545cc7982a44fa0e42ea9b183f068d95. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7a015f7-ab5e-4aac-8b56-88ca87759d4f.json and https://artists.proofprofile.net/proofs/artist/c7a015f7-ab5e-4aac-8b56-88ca87759d4f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x0dedffddae30aa7c54f01592498df42ce83221f47041beed221682c6c189235e","isrc":"QZNJW2404089","name":"Tropa dos de Raça","registered_at":"2026-06-05T20:44:22Z","spotify_id":"1DutJO3iBKFfAER4fPDM26","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 0x0dedffddae30aa7c54f01592498df42ce83221f47041beed221682c6c189235e. 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/1DutJO3iBKFfAER4fPDM26.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/1DutJO3iBKFfAER4fPDM26.
{"copyright_id":"0x4616ebafa094ecf33a5a7c0e1c157e69036b88917bfc0779ad40ccaa678bd037","isrc":"QZNJW2402886","name":"Quer da pra Tropa do Oruam","registered_at":"2026-06-10T02:10:48Z","spotify_id":"7inECJ4EeDPKcGtWKPR0bK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4616ebafa094ecf33a5a7c0e1c157e69036b88917bfc0779ad40ccaa678bd037. 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/7inECJ4EeDPKcGtWKPR0bK.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/7inECJ4EeDPKcGtWKPR0bK.
{"copyright_id":"0xe689679e872e2ef06b3eb475ff361be69d87ceadc650184103a4eec3bccd7135","isrc":"QZNJW2404087","name":"Putaria Com a Tropa do 22","registered_at":"2026-06-09T06:18:14Z","spotify_id":"6aG9pVTfD40X8oNFRtZE3e","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe689679e872e2ef06b3eb475ff361be69d87ceadc650184103a4eec3bccd7135. 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/6aG9pVTfD40X8oNFRtZE3e.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/6aG9pVTfD40X8oNFRtZE3e.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f3389b812d1b5c24ff04164aab77ada74a281bad796d24bc87fbb6a203eb4e. 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/6ma1rEnWbdDsf2cUM0mm9g.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/6ma1rEnWbdDsf2cUM0mm9g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bde9ab32a1082f39e0b6095e554c2982d294560bec4f20c3547395fd49ccbe. 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/3q7ux4SwZwhF7iJIqM524L.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/3q7ux4SwZwhF7iJIqM524L.
{"copyright_id":"0x50dcc50d604b9931066f3aad3b062f210e15b3f035c1e044a7e64ebbb6b4539a","isrc":"BCM9A2400002","name":"Rolé na Favela de Nave","registered_at":"2026-06-01T06:35:37Z","spotify_id":"1m5nbZiPpCIi9J2irLNoxh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dcc50d604b9931066f3aad3b062f210e15b3f035c1e044a7e64ebbb6b4539a. 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/1m5nbZiPpCIi9J2irLNoxh.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/1m5nbZiPpCIi9J2irLNoxh.
{"copyright_id":"0xc6fdab1604ce3f40565ea75572d9897262b70b78b1ac92dead708dafa26d1e55","isrc":"QZTVM2317217","name":"Tomando Patricinha de Playboy","registered_at":"2026-06-23T02:28:23Z","spotify_id":"1KhjmLk8QtgJSmYpWpYKkO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fdab1604ce3f40565ea75572d9897262b70b78b1ac92dead708dafa26d1e55. 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/1KhjmLk8QtgJSmYpWpYKkO.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/1KhjmLk8QtgJSmYpWpYKkO.
{"copyright_id":"0x020b48cea90682af4c9de8fcbc3ee8119a317a30e74b6fe428ae810603aa1266","isrc":"QZNJZ2304334","name":"Ak de Ouro do Bravo","registered_at":"2026-06-05T15:58:06Z","spotify_id":"6TJ99VR7KRFpZb7bSA5zma","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020b48cea90682af4c9de8fcbc3ee8119a317a30e74b6fe428ae810603aa1266. 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/6TJ99VR7KRFpZb7bSA5zma.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/6TJ99VR7KRFpZb7bSA5zma.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070be50f7637e7a36583070cbb17bf96106613922dec052ee6c18c2288370c44. 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/0hjeRvPjIXCmeUqBmpaS6Y.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/0hjeRvPjIXCmeUqBmpaS6Y.
{"copyright_id":"0x47b55d5d11067f265742a388acd8790cb82641ef42b1ddfc46588ee139fb8b4c","isrc":"BKCEP2300004","name":"Olha o Fuzil da Tropa do Bravo","registered_at":"2026-06-22T23:04:08Z","spotify_id":"7okN8G7JqcWrja4NZOGlzW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b55d5d11067f265742a388acd8790cb82641ef42b1ddfc46588ee139fb8b4c. 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/7okN8G7JqcWrja4NZOGlzW.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/7okN8G7JqcWrja4NZOGlzW.
{"copyright_id":"0x4130799e014f812dc34df38a2c58bc3f4567e2b9e8da9297ccc9c56eefcedb36","isrc":"US7VG2319205","name":"Ela Sai da Sul Sobe o Morro do Vidigal","registered_at":"2026-06-06T02:42:02Z","spotify_id":"6fZ4ZCUbYeABzhOwVC1wEt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4130799e014f812dc34df38a2c58bc3f4567e2b9e8da9297ccc9c56eefcedb36. 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/6fZ4ZCUbYeABzhOwVC1wEt.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/6fZ4ZCUbYeABzhOwVC1wEt.
{"copyright_id":"0x43ab0a7c8e913decdcef01b79dccc0ddfeeca7c023be50744061805cb49231e6","isrc":"QZGLM2271167","name":"Olhares de Inveja","registered_at":"2026-06-18T13:30:47Z","spotify_id":"6vpNaZ4Zg7G5FflzOtAang","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ab0a7c8e913decdcef01b79dccc0ddfeeca7c023be50744061805cb49231e6. 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/6vpNaZ4Zg7G5FflzOtAang.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/6vpNaZ4Zg7G5FflzOtAang.