Bang Gang is a downtempo band from Iceland founded by songwriter and producer Barði Jóhannsson (see also Lady & Bird). The band was formed in 1996, in Barði's hometown of Reykjavík. Bang Gang were ini
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 0x395cfda68c873d830e511642484a945954ac2ea3efc5dec5eb1a3f2c0b1340d4. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3aab5752-3256-4efd-9563-b32bb0291487.json and https://artists.proofprofile.net/proofs/artist/3aab5752-3256-4efd-9563-b32bb0291487.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).