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 0xb58b68d32d20f01f88c7a8bf39251493e0bd8fa03bc98ee6026b932226ff44d7. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1d989d9-1a12-458d-9e59-e3d1965b7954.json and https://artists.proofprofile.net/proofs/artist/c1d989d9-1a12-458d-9e59-e3d1965b7954.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 0x7a300381faab799daad42477d4b4d851411d770cab95317f5ac7102ce0eb194c. 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/BCYVY2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d07c30002b5558934156a45706bf31eb0e502bf11a46a95af2df78077305a76. 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/BCYVY2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17272ce8edeee6fc4735e3e0521789a143bee55fa7568cdae015e584c7c3734. 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/BCYVY2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09d6680c2e28d35ebd55ed3b3fb2ea9362d6545b3ea48b3f958733fd2807f02. 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/BCYVY2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa005835602aaf3c47d7af86575ac8392044be3aa2f9e82baa9d5f2bb8da390. 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/BCYVY2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3629671ae40be578c84843c0b6eb3d7fb9f1b7d0ac07603be2fa201d7ae8b6c. 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/BCYVY2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8058ed9172c115a7579daea9838f6c8ed37e57cdc1b88dad3026b79bd83816. 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/BCYVY2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b4c86ae282602edd0931f27e0c1665908787e9db6506211cd1ab49838ea285. 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/BCYVY2200008.
Transtorno de Estresse Pós Traumático de Apartamento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97932d5ffeea19ed6e57f27a69cede3d0f7680f9c0908a2ee46a0e121dc321d5. 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/BCYVY2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817ebff9042e0438e76cb00816ef0cdd89c98507e4a2ffa98d9439f7eaa0985f. 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/BCYVY2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ecf098a7ccefb9debf2045f8ca461c4e8602bbfb4732949f407d7188086719. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BXBE91800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe440c6d8e7b3aba7b545392bc50c3a6e09b4c784f0935660b38aaaa6cfbf62. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BRTRB2091363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe440c6d8e7b3aba7b545392bc50c3a6e09b4c784f0935660b38aaaa6cfbf62. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRTRB2091363.
O Coração Batendo no Corpo Todo (Esperar o Sol)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99699da22fe3e5d0f8ccd221af9dabbcda3cbadc984e7959ffc16b7cd6895dfa. 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/BXBE92300001.