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 0xd153b52ebaca9ed9ab627e919a8d5f0911f523c8df9358dd45755974419790af. 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/46c414d8-7fbe-4b28-93a4-689ebfcb0171.json and https://artists.proofprofile.net/proofs/artist/46c414d8-7fbe-4b28-93a4-689ebfcb0171.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 0x49102f8b1fe045113b1630623c26ea39528e4775d563cd5421173f6b460b8071. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRGPG1900067.
Que Som é Esse? (Musica Original do Filme Turma da Mônica Lições)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a4d077730c02c4ddd269a5e3d1bf45fd01c020b0204e195413871f345b49c6. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BRGPG2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf180764a20c50a59b801547cc0c40c42fd8d7ae64dc4b47939e46cf3caef3ca5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRGPG2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b28eb8b2cf21c0369eed4061df9ef97b9a76173f16052d6ea423cdc409db176. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:30:09Z), 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/BRGPG2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf112bdb967271848fadba1b1547601fdc11dc510de006314ee79faa92c76857c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:34:50Z), 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/BRGPG2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea7a39b9958d75607bc4365ce04a1f3bc811e7e2bac98ce9024701c26d1aba0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:49:50Z), 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/BRGPG2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf687adc4701e0e8d5b0af424213bfbbcfb1d270589cfd71477d51c57867305f9. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BC1GL2550749.
Garota de Ipanema - Ao Vivo no Coala Festival 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534c0f26f8c06cb9827734a9b9e84eb41a2144287d9064c2494ee79582a794c9. 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/BRGPG2200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d92bce1c1798e7a0654055e270b3451f86af893e1563bdd9105190b3c7cf896. 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/BR7OQ2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352dd9424b3df3721e51c150e92a309e9e9371de638389a9b390b750a3b48873. 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/BRGPG2200075.