Jon & Robin were an American pop music duo from the 1960s, composed of Jon Abdnor Junior and Javonne "Robin" Braga. The group recorded for Abdnor's father's label, Abnak Records. Wayne Carson Thompson
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 0xd257e0e8b281f73ece4981f2e40ce61beecd2c273d478817c14fed1779b84460. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9c1645b-1d23-4f15-92ec-18edf8f9b140.json and https://artists.proofprofile.net/proofs/artist/b9c1645b-1d23-4f15-92ec-18edf8f9b140.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).