Derby ( ) is a cathedral city and unitary authority area on the River Derwent in Derbyshire, England. Derbyshire is named after Derby, which was its original county town. As a unitary authority, Derby
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 0xa55facd780aa867888c1f1ffedfff669a00ffdd944b1b0d6eb2508f3e3d2f3f3. 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/e5a95922-3b84-4eab-8bc8-435b88338913.json and https://artists.proofprofile.net/proofs/artist/e5a95922-3b84-4eab-8bc8-435b88338913.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 0x2afb95399f655445cbd0ff76363728901ce5040ee4193442558c52435be0c969. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IDAC50800372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311d86af2eb6c701c26e1be2f0771981d707429811520fe6a7d168a78de83a0a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:54:54Z), 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/IDAC50800367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a36d1d91d2e0022a51a05820ffc3b2ca474d6ad9b09d742a6620866ec37a430. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IDAC50800385.
Mengenang Bintang (From The "Petualangan Sherina 2" Soundtrack)
Mengenang Bintang - From The "Petualangan Sherina 2" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c975cbf706240280ba3ccfdf9df34515b555a304306c48d77dfc6baa04476d7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:57Z), 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/IDA172305066.