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 0x4ff7c0f466ff63e59c479c5f26f6c471161e6f22405f66d581ec44f4be5ef93a. 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/4e6b8c37-a6b2-4c12-ae8c-32a1d7b04e9e.json and https://artists.proofprofile.net/proofs/artist/4e6b8c37-a6b2-4c12-ae8c-32a1d7b04e9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Caçulinha Na Tonga Da Mironga Do Kabuletê
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 0x6ce6447708ab42e642e1b4e3e912454b99a481400b61448fc7f82462ecfdfbc4. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BRMZA0600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed96f3188150fb5712a7733750dd914d0a9ecd9e5310acdcfa81cf84b550cd9a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRMZA0600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fd8b516dbdc9b58c558dbdb914dc2813d1449b4034980ca841ac681c4991f9. 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/BRMZA0600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeec5ee65735c38f5da1b0953bbb816286eebc46e5af2e4a96cf3e784d5511e9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BRMZA0600067.
Cai Cai Balão! / Capelinha de Melão / Feijão 10 - Queimado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc4d5c2dd6d78b7420a8e0c18684be4293052c5ca4bfbb966aac145f556e757. 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/BRMZA0600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5255f80d9a577e4bc3868da381be4f9c70f5903ed5d7c93569cf2219cf14450. 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/BRKUA2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79c49fa9a0c8957a1c0a21726bf50f575c60a1638a2de3f02317168d83cc5e7. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/BRKUA2000021.
A Saudade Mata a Gente / Felicidade (Ao Vivo)
Na Cadência do Samba / Atire a Primeira Pedra / Ai Que Saudade da Amélia (Ao Vivo)
Deusa da Minha Rua / O Menino da Porteira (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ce6fa6b1e45c7d17cc3b4e076fc984f27ea140a7839ac0881a80a4656e1fd0. 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/BRPUI1800048.