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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5aea346b17e0c46ca9fda1829ba6aef7faf88167633e38470599b4ef883387. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f974db2f-fac7-46a8-8e61-2f3dc396eb8f.json and https://artists.proofprofile.net/proofs/artist/f974db2f-fac7-46a8-8e61-2f3dc396eb8f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dde6b76b74a7ba93f5f977402307b35d9b62f095441237279dc105a5db74fb0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BRAPI0602562.
Pot-Pourri: Casa de Bem - Bem / Leverger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71851bbac87b93233d152eecb9e901fce54746d822fbb33a062e0ff929f4c899. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:01:43Z), 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/BRAPI0602563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99de45c4963f14116b23f975299ea5a4279e6125ac4ca49b5001c73dabeb417d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/BRAPI0602565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a61f04de8c08233684cbd09a4b15bfc482048359e4a3223f015944463a46a2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BRAPI0602566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2740dcf8e087a5d1216d64f5e2791e8e0dbd92505ef5f5373e27678d59272ee8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRAPI0602568.
Pot-Pourri: Rasqueado do Pau Rodado / Moreninha do Cpa / Rebuça e Tchuça / Cachimbocó / Pixe / Lua / Rasqueado do Pau Rodado, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45808a4e4bafc0d16d84a4fd308aabe11f7f323b332c5d00d6f351956e2e9a29. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:32:08Z), 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/BRAPI9900256.