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 0x8c2c090bde63f3cc29149519304ffa07f718ade8195f770f9a326a9bbafdfe9d. 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/d156892e-6538-40ea-918c-6292c2769dd9.json and https://artists.proofprofile.net/proofs/artist/d156892e-6538-40ea-918c-6292c2769dd9.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 0x6f4e07e5f2af9179a733cce3a2c810d21bf628c97dfae11d7827816e08bfc282. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCA6L2200215.
Fazendinha Sessions - Vai Ser Bão Pra Lá EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3804e4bd44808b80062591228398dcd24e31352ac6c83e73a064f9dd230542bb. 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/BCAPT2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4ffc1c8be1ab198cef0f63cfbbb96222d660e36fdbaf24be858f8edf5aaf6c. 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/BRKZ71700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7b00ee9591bce69eea62399161e6cee204acb8eb57ea94388c9bf45eaaf545. 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/BKMPY2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fb98841091b498b8bf334173a103f6ac2e9b7736e448f44ebe9a18e7b321b7. 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/BXNT62208831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453cf9558dfb2fc36d7a3a2debd4798a27a8af1e2fdef4ed7cf2ec0019b80d41. 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/BKMPY2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8028f0254c011df06b9f405fa0f3fe64e06bd51ba7af48d3372efa15f24fd146. 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/BXTB12400028.
Truco, Pinga e Moda - Ao Vivo em Campo Grande
Ao Vivo Em Campo Grande (Ao Vivo em Campo Grande)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56684130c015d14d893964ee713b7ec99ea6d6780c5d56b6b13161c77b92491. 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/BXTB12200080.
Truco, Pinga e Moda (Ao Vivo em Campo Grande)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56684130c015d14d893964ee713b7ec99ea6d6780c5d56b6b13161c77b92491. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BXTB12200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1812b6762e3b9eedc69dbda5694f047ee593dd9638802637a0964092f25d3594. 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/BRQR22300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3804e4bd44808b80062591228398dcd24e31352ac6c83e73a064f9dd230542bb. 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/BCAPT2200007.
Fazendinha Sessions #2: Vai Ser Bão Pra lá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bd8479d81a94e3142822ec568cbd424c833d14b453bfed7af44421abf4dc46. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCAPT2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8679e6e956d40995eb6f48e29364cf989657efeeb5aa1b921e1f702fc9b07f63. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BR5K41900008.
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 0xa3859d28ad8447d62a1f079343afc49af4ae828314ed27c60aac748793e3ca99. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BXDU11800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224eafaa4ec0677d1d4a2397ba6990959036b31b6d0b30f7af0b47d543c1ff27. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BR3T81600324.