Brothertunes is a pop music group from Bern, Switzerland. The founding members consist of Rich Fonje (vocals) and Philly Hansen (guitarist). Musical career Brothertunes' first radio single "Sincerely
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 0x27fa5ed3c9133b1f3b2ab3ffe4f58a1fb2cb7f6d5a67275924bad039669c1e36. 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/bd3e13a7-b082-4938-9ffc-16856c6ae13e.json and https://artists.proofprofile.net/proofs/artist/bd3e13a7-b082-4938-9ffc-16856c6ae13e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).