thumb|300px|right|Carlo Curley Carlo James Curley (August 24, 1952 – August 11, 2012) was an American classical concert organist who lived much of his later life in Great Britain.Black, Fergus (7 Octo
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 0xd92a2fa5fa3a31b670b645736b61b91d536de876755c2812c3a6ba23bc7c645e. Chain 2 (Bitcoin): anchored in block 953991 (2026-06-16T18:47:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e4a2c1d-1c32-4221-af09-e541b48ab7ca.json and https://artists.proofprofile.net/proofs/artist/2e4a2c1d-1c32-4221-af09-e541b48ab7ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Orgelstück (Fantasia) für eine Uhr in F minor, K.608
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 0x06f533f904cd42f41abbd09c8257393745636e01139315b0eb567b67201eb986. 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/GBF078943704.
Organ Concerto No. 5 in F, Op. 4 No. 5: 2. Allegro (Arr. Curley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf94696b236cc1401534159d155e07aa056bf76f6260f27d30525db83d290050. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBF078943707.