Doxa (; from verb )Liddell, Henry George, and Robert Scott. 1940. "δοκέω." In A Greek-English Lexicon, edited by H. S. Jones and R. McKenzie. Oxford. Clarendon Press. – via Perseus Project. is a commo
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec135cd31558947517b0ff10d1ef24c7f67a95473fee78cc435d18e27c30195e. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bc6cea8-6c0d-406f-b7e8-3aee05704657.json and https://artists.proofprofile.net/proofs/artist/9bc6cea8-6c0d-406f-b7e8-3aee05704657.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).