River Jude Phoenix (; August 23, 1970 – October 31, 1993) was an American actor and musician. The older brother of actor Joaquin Phoenix, he was known as a teen actor before taking on leading roles in
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 0x9eee9ed395b7d72941dbe999c1c8d2a0b189765f76778e32a31e1151bdd34ce5. Chain 2 (Bitcoin): anchored in block 954019 (2026-06-16T23:44:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/355c3a5c-db58-42f4-8f5c-6c0c1dcfa8b1.json and https://artists.proofprofile.net/proofs/artist/355c3a5c-db58-42f4-8f5c-6c0c1dcfa8b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).