Mark Laurence James Blatchly (born 1960) is an English organist and composer.Watkins Shaw, The Succession of Organists of the Chapel Royal and the Cathedrals of England and Wales from c.1538, Oxford U
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 0x293bc9eb22530d44b382f33301fc5d67cee95dafabf7dad0b95249aa0db64d35. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f7802af-169e-4827-a45f-dc870f08b51e.json and https://artists.proofprofile.net/proofs/artist/9f7802af-169e-4827-a45f-dc870f08b51e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Crossing the Bar "Sunset and Evening Star"
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 0x78e31c4e1b7a9e8c070c713e17a17aa695740aa125934f0dc13503cc7ad4deb1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAJY0339805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b6869c9319709a2c7dfd19c43da5759cf0f9951ef6d1609ca8af5291f75f35. 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/GBAJY0339808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96bef9eb0a87a5efa08b012bcc844897fccf1070aebe3f1e96df461aa2714ae. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBXUX0803302.
Alpha Collection, Vol. 3: Choral Music from Gloucester Cathedral (Remastered)