AUA may stand for: Association American Unitarian Association, a Unitarian religious denomination in the United States and Canada from 1828 to 1961 American Urological Association Asian Universities
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 0xfc72dace433d2f2c32464a7c8abda405941a445ba371b72670e641660d81d4c0. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b237c37-0fcd-493f-946c-756f9f60b7fb.json and https://artists.proofprofile.net/proofs/artist/0b237c37-0fcd-493f-946c-756f9f60b7fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).