ReCOV is a COVID-19 vaccine candidate developed by Jiangsu Rec-Biotechnology Co Ltd. References Category:Clinical trials related to COVID-19 Category:Chinese COVID-19 vaccines Category:Protein sub
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 0xa4961dc95ae44df723afa18c048a77baa4e5180d4fd12a3ae428f6b78fb4148d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa9097f2-8463-4431-a706-63cdc0ed0c3f.json and https://artists.proofprofile.net/proofs/artist/aa9097f2-8463-4431-a706-63cdc0ed0c3f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).