Pooja Yadav (born 1989) is a para athlete from Haryana. She represented India at the 2022 Asian Para Games and won a silver medal in the women's discus throw F54/55 event on 25 October 2023. 25px E
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 0xbc6cc0951921110eac3d8e145087f9a6b7fd8410b84794ac2d8029482ef927a5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74be7e3c-471c-4d98-8207-113d47a12b33.json and https://artists.proofprofile.net/proofs/artist/74be7e3c-471c-4d98-8207-113d47a12b33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).