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 0x13744adcee409c107cf2e0816e42b0d46d639f6e470a5b3f8cf84b77b1a40283. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f622fc3-2707-4e7b-98ef-2058b04bf569.json and https://artists.proofprofile.net/proofs/artist/0f622fc3-2707-4e7b-98ef-2058b04bf569.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Saveur Brésil (feat. Rosinha de Valença) [Brazilian Flavour]
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 0x6a7114801d062bb2d82ad355245f372717babb63b4fcb630592973eda43521c3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/FR6V80104411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67de228a18175fac4695eb67d220e3f7d4e20e436ca3e685f624ef83e96152a6. 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/FR6V80104416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e997214931d1285e924c802814f9a655e2ef01b7497a480f242b4924dcf8331. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:56Z), 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/FR6V80104418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69f4492439c25ccf2b10c187182151a8913d48a75e8eaf728abf9fd36aa1163. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:07Z), 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/FR6V80104422.