John Greer may refer to: John Greer, character in Person of Interest John Greer (sculptor), Canadian sculptor John W. Greer, Jr. (1909–1994), Georgia politician John Alexander Greer (1802–1855), Texas
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 0xc6a13bfbd6abb9f810a7fad78273debad569ef19a21252863983d6f828809927. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccaf339a-8c12-47c1-b1cc-3d1c9fef007e.json and https://artists.proofprofile.net/proofs/artist/ccaf339a-8c12-47c1-b1cc-3d1c9fef007e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Very Best Of Country Gospel - Volume 2