Raeva is a surname. Notable people with the surname include: Alexandra Raeva (born 1992), Russian curler Bilyana Raeva (born 1973), Bulgarian politician Iliana Raeva (born 1963), Bulgarian gymnast S
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 0xe42abbc84616a8a6fa53f597bb3263d8ce0c6804268f0b7e70ad260ae9c1754e. 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/9b5e122a-1f6c-474c-bf41-ca38da2f0131.json and https://artists.proofprofile.net/proofs/artist/9b5e122a-1f6c-474c-bf41-ca38da2f0131.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).