Christopher Henry Difford (born 4 November 1954) is an English musician. He is a founding member and songwriter of the rock group Squeeze. Difford is known for his songwriting partnership with Squeez
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 0x40c5f9effe7f0b4a92e5259b86b749af4d339cd2706998e1d98a9f83d1b450eb. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79cd6ea2-0553-4265-9396-45fc8879d298.json and https://artists.proofprofile.net/proofs/artist/79cd6ea2-0553-4265-9396-45fc8879d298.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Didn't Get Where I Am (Deluxe Edition)
The Last Temptation of Chris (Deluxe Edition)
For the Love of Harry: Everybody Sings Nilsson
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 0x618ffbd8f91fbcb7cf3efd2315896d16a53fcfe9b4c20dedf05d613622a23911. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-07T00:37:51Z), 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/USMU10820830.
Jools Holland And Friends - Small World Big Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a7e5951c35909617e5fed3fcffec86d3f6987618603d6d02220480d42c8efe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCRL0100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4c0747f612d5306ae9e98e36c04b2a83d57d7991dd00a15482fc854575a3f8. 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/QMZUM2200033.