The Twin River is a tributary of the Iskut River in the northwest part of the province of British Columbia, Canada. From its source in Twin Glacier the Twin River flows south for about ,Length measure
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 0x5912064ddefa7378193684d4e07422620b0b8de9f7b4fa21723815033432db79. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04d22f89-7db6-4277-a19e-627152fd36fa.json and https://artists.proofprofile.net/proofs/artist/04d22f89-7db6-4277-a19e-627152fd36fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).