Uri may refer to: Places Canton of Uri, a canton in Switzerland Úri, a village and commune in Hungary Uri, Iran, a village in East Azerbaijan Province Uri, Jammu and Kashmir, a town in India Uri
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 0x54779c6bc6f7e29f57f6da016a38859e84f4914fe1f505a6f5b4ad18fbe5b1b2. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f69beff-9582-4f85-9435-4c883ed68064.json and https://artists.proofprofile.net/proofs/artist/6f69beff-9582-4f85-9435-4c883ed68064.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).