thumb | right | alt=ALexandra of Denmark, Princess of Wales | Alexandra of Denmark, Princess of Wales Alexandra () is a female given name of Greek origin. It is the first attested form of its variant
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 0xb00eb93896a684a211f45c3bcc90343777ad3bab9ee5c227b71725a50aa5010a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6448204f-56c3-4fc0-98df-12946e4d645a.json and https://artists.proofprofile.net/proofs/artist/6448204f-56c3-4fc0-98df-12946e4d645a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).