Ivor Bertie Gurney (28 August 1890 – 26 December 1937) was an English poet and composer. Born and raised in Gloucester, he suffered from bipolar disorder through much of his life and spent his last 15
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 0x8adf94024bea3994a19da9dfae6342252c054d607675f1a019453721d651b76e. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84f9b437-3aa3-4026-a682-cb914e3c3265.json and https://artists.proofprofile.net/proofs/artist/84f9b437-3aa3-4026-a682-cb914e3c3265.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gurney: Severn Meadows; 5 Elizabethan & Other Songs
Gurney, I.: Songs (English Song, Vol. 19)
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 0x742cea7e03c901565401af1c554f04c7749449e3e8651dbe5d2afb7c46f99f8d. 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/HKI192420101.
Ivor Gurney: 5 Elizabethan Songs: No. 4, Sleep
Since I Believe in God the Father Almighty
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f69fee2908ffa774832489c70e11496f859844d5861ffd29b9445a5d444e66b. 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/GBEJP1513405.