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 0x60060f792796104235ec13ff60552f43bafa7e2d78700d164c3726d231882b3b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12cbfb5d-894e-4a0e-b92d-bdb0913e1838.json and https://artists.proofprofile.net/proofs/artist/12cbfb5d-894e-4a0e-b92d-bdb0913e1838.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 0x91825a08b3a3364a934e1be8b3cf5258c19b4ad58f6f32644ab92688578ac8e8. 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/1GmtlLVjLRIZ57Fi6wap5s.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/1GmtlLVjLRIZ57Fi6wap5s.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dfb2ef8541a4b96c491608e2514c043f6962d6562e7192d9cad80df1362559. 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/4pXjcc9OxOQpyXDbq54aaW.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/4pXjcc9OxOQpyXDbq54aaW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775008d1b6031db224b8f57d16748e87e11dbc24d574ce0d9b1c2d965eaa03a0. 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/2DhVBgbA21rD4zOSjEd6aA.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/2DhVBgbA21rD4zOSjEd6aA.
Oh Mulher Eu Te Conheço Des da Época da Escola
{"copyright_id":"0x457b0ed313996f27b44da0986dd44bced559fa2ccd7649e8c8b717960b36450f","isrc":"BXKG22302768","name":"Oh Mulher Eu Te Conheço Des da Época da Escola","registered_at":"2026-06-07T18:06:24Z","spotify_id":"04JIR04uas5IU2ZGVm7Y58","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457b0ed313996f27b44da0986dd44bced559fa2ccd7649e8c8b717960b36450f. 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/04JIR04uas5IU2ZGVm7Y58.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/04JIR04uas5IU2ZGVm7Y58.
{"copyright_id":"0x351a177f22734f436fc16cc275f2bcba23a0f2c72bbc7add176c89913467182f","isrc":"BCFCV2500078","name":"Gosto Dessa Vida","registered_at":"2026-06-29T04:48:02Z","spotify_id":"7E0yjX5jsZpwBsPeUXDjWc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351a177f22734f436fc16cc275f2bcba23a0f2c72bbc7add176c89913467182f. 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/7E0yjX5jsZpwBsPeUXDjWc.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/7E0yjX5jsZpwBsPeUXDjWc.
{"copyright_id":"0xaa29eddf89c534d19854329c827194859c6ad8c34e4a2cf8d36dbdd3421b8604","isrc":"QZNJX2440884","name":"Solteiro Eu Vim - Eletrofunk","registered_at":"2026-06-08T03:22:51Z","spotify_id":"2x57x4hxNaKmwwrsB6gs7b","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa29eddf89c534d19854329c827194859c6ad8c34e4a2cf8d36dbdd3421b8604. 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/2x57x4hxNaKmwwrsB6gs7b.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/2x57x4hxNaKmwwrsB6gs7b.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e662786794d01720308766d048ebb3cd318ff74719fc168ab8e5ae296afb05c. 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/5T0QGguA3QFgbxXdTMAEaN.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/5T0QGguA3QFgbxXdTMAEaN.
{"copyright_id":"0x589ed9c0790712759561b01cb875ca39d9dd8ea510c2b22c630d92c204d247bc","isrc":"QZGLS2503570","name":"Eu Não Consigo Esquecer Ela","registered_at":"2026-06-09T04:43:38Z","spotify_id":"0uSNpH8SlKtXnYW2YzErOQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589ed9c0790712759561b01cb875ca39d9dd8ea510c2b22c630d92c204d247bc. 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/0uSNpH8SlKtXnYW2YzErOQ.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/0uSNpH8SlKtXnYW2YzErOQ.
{"copyright_id":"0xdd1e7bf8a4f7bc61edec180561d56713bcb5ff4385fea5221b0710082f40365f","isrc":"BCLWS2302136","name":"Ela Vem Com a Matemática","registered_at":"2026-06-28T05:58:22Z","spotify_id":"7IlJwpdo0qiN2LTFppMoEp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1e7bf8a4f7bc61edec180561d56713bcb5ff4385fea5221b0710082f40365f. 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/7IlJwpdo0qiN2LTFppMoEp.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/7IlJwpdo0qiN2LTFppMoEp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263871553009c256918fab14fb47bb1a8d43e1e59053e586f052d4b6443d1687. 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/7DT70p0htAgqCeiiqMJJwN.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/7DT70p0htAgqCeiiqMJJwN.
{"copyright_id":"0x0d35123e8584b9022195cb5975af97fecc16c46feabd122c4ac2b108ac853b28","isrc":"BCZ582500128","name":"SEQUÊNCIA DA PENETRAÇÃO","registered_at":"2026-06-09T14:29:14Z","spotify_id":"6TcZoYbl2lgIgAOFStFBJY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d35123e8584b9022195cb5975af97fecc16c46feabd122c4ac2b108ac853b28. 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/6TcZoYbl2lgIgAOFStFBJY.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/6TcZoYbl2lgIgAOFStFBJY.