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 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 0x2da0bb31c971d605caa547c14ba56217ec499a266fec639090245628bcb40ccf. 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/28e3fd76-7a8f-43e8-95fb-d66a8c4402b2.json and https://artists.proofprofile.net/proofs/artist/28e3fd76-7a8f-43e8-95fb-d66a8c4402b2.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 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 0xf82f0c7de6aeb160232571da2245f709ea224f543901468a968a0f74f53da2e9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKP9L2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec10bca3139351fc9a586dcc33510aa6c8fa516e70023ecb16ea581f9ad2d6bb. 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/GXD7G2446487.
Joga na Frequência do Rádio, Só Bandido Mal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9295ddc4df8932c89fbc9b8fd95076d56653eb470049427c122807368580bf12. 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/SGB502447964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f05ebeadc55ac01d2067d22cbb03859eb1dbfc05227d3acc32594c8915524ac. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9N2233691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c57bce5de6e87868d399b80b443307344c6aee9d28f0c133ce3f0f2d978781. 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/QZGLS2433454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa419538376f6e53d2dfdf9b841444e89fc2341c06f16b573c52d2d647b85a6c0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKOUP2400036.
Grau e Fuga na Viatura X Vem Ka, pra Me Dar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a855e4febe4b240098925f5808c2fd66a1d416a69baa774ce8951a3430ecea3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKVSN2300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9865d9addd43b1f7c090ea2e678e09fb4f3b6b287f38c7ea6306a06d98977ef2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKCMX2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf67c4da2475fe4aab044633bebf5cd7f4155bf58dc551a6862f2db02f90351. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6F2101499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab92ce1c305aba1199fcbf7b499f6acbacd6b9967e8a8d7f4a15ccf546a372c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKCMX2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1175ef6920087f276981d914dafa2b37aa89e00aa473f82554a01453e9dd04. 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/BXJ3W2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aaaab1381a951bd00299a7a1a96cc9b3a19a70cc0b6f5f9dab6dad9dd21e6b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BCA6L2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1d0c48bbb921851639d4a894f2091115a9695fdd65b2368a984bc3eeaa3349. 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/QZNJV2248708.
10 MINUTINHOS DE ARRAIÁ DA (TROPA DO PESTINHA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ae92ad026fd3498c088fb70aac1dbeee05587eaeb2d9fdcdce11e53ac5542b. 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/QZRP52472120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c884ddbf7fbd83a5c603d2898ad22afb0c43cc1fd0e591c2817eeff7d0aed10. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZRP52472117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693d6dcd40d993261e226159a8df824e30cfd922899ce445c1b62329aaa3f19a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:03:08Z), 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/QZRP52472119.