Charles Douglas Langford (December 9, 1922 – February 11, 2007) was an Alabama state senator who represented Rosa Parks in the famous civil rights case of the 1960s. Attorney Langford served in the A
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 0xfa28fadcd2c390dabc4a75e31bcb6dd7b69407416c06b812634c06f9f16ac3e5. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c6ce18f-9256-429d-b82d-f7e1e0a3a588.json and https://artists.proofprofile.net/proofs/artist/9c6ce18f-9256-429d-b82d-f7e1e0a3a588.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).