Eldridge may refer to: People Surname A. D. Eldridge (1851–?), American politician, member of the Wisconsin State Assembly Aethelred Eldridge (1930–2018), American painter and art professor Alexa
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 0xa89638103d6d0b679b69207f68d0cca20a25af32945adb400db18aff2860d24d. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6748b9c-055f-44dc-8606-8ce05b115bf1.json and https://artists.proofprofile.net/proofs/artist/d6748b9c-055f-44dc-8606-8ce05b115bf1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).