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 0x25e7ba713bb6db7301d12a4149969371d4a398e509c795223e177eee1f72adc4. 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/bcc04b92-cfa5-415c-9ff4-c70bbaf81ca1.json and https://artists.proofprofile.net/proofs/artist/bcc04b92-cfa5-415c-9ff4-c70bbaf81ca1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Melhor do Bolero, Vol. 2 (Instrumental)
Rock and Roll Lullaby / Whiter Shade of Pale - Instrumental
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 0xc332b2d5dfe52fe7fa0019e5f3c2d863e973e027dc1b8954686a262c72723bdd. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/BR03D1400491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fc11e07cbf2edbc15436e016df60ebe421a0b88378ecde2153ae85a30dc47c. 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/BR03D1400492.
I Started a Joke / Coimbra - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53af2361130e097be9165cef45b11668ff08b74c9f15149e93aff931cb7394e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/BR03D1400495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f6a1fae9cde2f0c6205dc4ee4a09b99a91fd64003616bd32577dac7fcfd1e1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/BR03D1400497.
The End / Unchained Melody - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dd0e62df8488735ce8ca19d1c70691c05034babfd69d2656816befdf8c1742. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/BR03D1400498.
Look for a Star / Aqueles Olhos Verdes - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9372ec6db34bc41991164d8c4ead68b7f3a7ea7a634eb7fc1a98d5f46543fe. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/BR03D1400500.
Dio Como Ti Amo / Blue Eyes - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e62a06dce9e90101b32a6a821efc605a0fc5bf28916208ec0598240629d199c. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/BR03D1400501.