1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x52c3bb1f9f82dcd95b7c3b61560dd81412bc70bf3f8e4e97753993653f1067b1. 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/c688aa17-b30a-4abd-80d9-25d5db010ecd.json and https://artists.proofprofile.net/proofs/artist/c688aa17-b30a-4abd-80d9-25d5db010ecd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b015697003ec5e6ad4e36cfa7c40c7c111913a276d4e4cab62e5be1bae52be. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07f8e65f0741030aa147b2a21a2fb56e6271dea25b1dee88f88c62ab48e8ca0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994329.
Pot-Pourri: Tem Pimenta / Arrebenta de Novo / Beco Bar - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9c858f2df37d6899e0f857b6ba9fd60ebd232ac343a7127f80f3d6c763eae8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0b0af23bb35a3cb4ebbf2bb7a8f2a6306bb98e153a6a78a5e07ba77e8ba863. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001bfe8bd40edc67728c8402a02e663ec7496d3ab58c7d57ea00030b42734c12. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8888d0154e29ca52c1b8c3c98a9525710ef7d3ec445fd2f0e8cb8d29437f331. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec53e4d1d57a211c65ae179291b8c72c1bade8b798039220ab44b7c0d5cc4ba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a868a799df3becc2db917f549407842ff9f9d32b397a5a0ce48d2daf39582c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96c64d864e35986ce74fcd1e09a221e88c2c1586d4c206a96f65b06ae0645ae. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c56bf1abb77e549997f86aca290855f5515510a384f60e0e0841415a7faf3cf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a566c15de5089c960083c7de8bd315253d5bc0643d4d5ed2eb453136d29c0ee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85806eb7ced748dd710443649c5e5422e596614a4b0dc37e1298ae38bb898257. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf628a234e98e63f77148a04728ffbe69c6e8a1fa9cacedfc7d87dbda27d122aa. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994363.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a15c89b8fc00b22c727289f4a69e00ebe1a0f38579528e56bba05f8853a0d73. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c4da4bb6d563bde931ccee8113711450a214a59f6b7ab74a43576918d943a4. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb580e16002c048d04c8395a76093224cfcba6f5a1aef5f55497871cfe858035f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201994361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da9ff18043ec18819324d1e7b2dccb02aeed2552c1175d8e4b91c13b5aeb92a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2491364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3122204956fd39cde650af93bbc4e7a5fa417ca0cdd2af6585c2687ea0f22f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2491366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146704669cbb87cc322acb483dce42dcacd2daf0e3cf5ecb7057ba825a78b6d6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2491379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2be54a2fa74ad84c7933b4a5bd409c6638ed8f1eae7b125a9e4ba9407caac66. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2491372.