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 0x24a8e00b2866a6038fb2b294d479822e1e17d640aefe624ff1d6f0f40a4367fa. 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/e346682c-2e26-4d9e-b6ca-cea0a414d8f2.json and https://artists.proofprofile.net/proofs/artist/e346682c-2e26-4d9e-b6ca-cea0a414d8f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Funk Brasil Relíquias (DJ Marlboro Remixes / Vol. 6)
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 0x58b038b84a2ed625d771043e2a5fdec7ca04407511fe7b3547449a8a8c015f9c. 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/BRLRE1900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142b7ec6f8f536ac4f1c3926670927e81e9f7bd77aa54b0792644b5805a78bbf. 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/BRLRE0700183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848874bb6c308949140d1a11003f75d05a4457125f745c6ad822266905f60cf4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRLRE0500013.
Primeiro Você Me Disse (feat. Mc Cacau) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e46a184ed2f73c360c2b93e8568fbc4bf278e552563778f2d8d59714926234. 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/BRFUP0300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eae0af5ebfaeb371ebddafe2c118174deb303ab98c8ca0a10fce31e39ad7a20. 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/BRBJC2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030c3ef4af45565d900942dbc87326648be3a303f2ab4c350354883622558abc. 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/BRBJC2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7345d9b9544e51b988e39e012e261e14a856a904588ad3efbdb4791967803e3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRBJC2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92850b114b2854b33e85dfa7f831283ea4bf4a11d303a0df10315324bd27bc80. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/BRBJC2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0984f92dac80dda5290ca8155056209b6badb7766375195a54a40bd920b7b6c3. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BRBJC2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d95d1521dc983caa28bb96e9d9db142fb96ca944bf6a2d6ecf6f0eb04eebd1a. 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/BRBJC2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd625799931f09352c835566f53ed03284211a5738322d187f5e76dbf328fe626. 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/BRBJC2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0909489aced77090bb3a3fb5c78fd0e7ef241f0530f2a502bc6980556bb53231. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/BRBJC2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ca7fa09db4ad3fd87a589dfd222a1a00bf9e5a1516eeeb9b63d2926a17e3eb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRLRE2400045.