Jojo, JoJo or Jo Jo is a given name, surname, nickname or stage name used by several people and fictional characters, including: People with the given name, nickname or stage name Musicians JoJo (sin
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 0xdfd9b4c4172d78b4c41eb63452fba24cdb294f030b7880f5e370f3c5817f1690. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/502d8909-69d7-4ffa-a6e2-b14dfee969a4.json and https://artists.proofprofile.net/proofs/artist/502d8909-69d7-4ffa-a6e2-b14dfee969a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).