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 0xfddc8b2cc3a6e8a6852f976b3d76f25aa02708f612f495d4a1e52bb6375ce27c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37e1e24e-1fa2-44d7-8c43-4f883d472beb.json and https://artists.proofprofile.net/proofs/artist/37e1e24e-1fa2-44d7-8c43-4f883d472beb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pure Brazilian Batucada (Percussion Madness from Brazil)
Samba Nightlife Vol. 1 (Brazilian Samba for Your Warm Summer Party Nights)
Samba Nightlife Vol. 2 (Brazilian Samba for Your Warm Summer Party Nights)
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 0xe9c169d18866ca118030f96ba7d7efd98d14eaf5572569c07df35fc934eb09cb. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/FR0W61472737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51541675724f244f9391859c7625e887579ba29d6e400860082ededac1b7874d. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/FR0W61472749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a49e4a5fbc85ec5ae4aca8b5f1b71355482b6a688b26884b2c3e9fad566d14d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/FR0W61472751.
Highlights Of Samba Brazilian Batucada Band
Percussion Madness, Vol. 1 (20 Brazilian Percussion and Batucada Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b2401b571d59cb6f6637adf05e7fb56d8b1d285dc361aa579a233f4284167d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR0W61469354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7fee286a777756eb3f3c659a5ff67957211b58b8b751e88857f0978f5de266. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FR0W61469361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6b8b0830d964a22973fd76305015655e0706e1937abd0048f6be12530da7f0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR0W61469371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68096cca932dbec2a224cfac55cad8fc64927cbd0b34eb534e76814050311760. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FR0W61469383.