Adiva (fl. c. 10th century CE) was the first wife of Boleslaus II of Bohemia. It has been speculated that she was the progeny of Edward the Elder, King of England, and his second wife Aelfflaed, but t
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 0x262d0b9fd1a46503646ff90464ff6e7ecc8b0b8b1397414f834425344b07efd3. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45ca149c-e2d1-4111-a5ad-dd3451d1351a.json and https://artists.proofprofile.net/proofs/artist/45ca149c-e2d1-4111-a5ad-dd3451d1351a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).