Brian Johnson (born 5 October 1947) is an English singer and songwriter. He is the third lead singer of the Australian rock band AC/DC, taking over the role in 1980 after the death of Bon Scott. Joh
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 0xa8c31777b0ebc57e891c6b8daddb7723a2e71c4b2711bed39360c95c9aa58756. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2d4b43a-272e-4e45-ab96-c1e5d4d9aeb9.json and https://artists.proofprofile.net/proofs/artist/a2d4b43a-272e-4e45-ab96-c1e5d4d9aeb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).