Maria Adela Constantin (born 28 August 1991) is a Romanian bobsledder.FIBT Profile Constantin competed at the 2014 Winter Olympics for Romania. She teamed with Andreea Grecu in the two-woman event,
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 0xf6f2bc455cf9ffb10d9a82f1dd8fa5987e8e885c1516c7284ae88c8aa165ed0a. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/905b76e0-4e61-438a-8162-4876e477d6fe.json and https://artists.proofprofile.net/proofs/artist/905b76e0-4e61-438a-8162-4876e477d6fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).