Jacob Jeffries Band was an American pop rock band from Ft. Lauderdale, Florida. Formed in 2006, the band consisted of Jacob Jeffries (vocals, piano), Jimmy Powers V (electric guitar, backing vocals) a
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 0x5fe99ed4e62a03ac4f9d6527affa7956cb203227cc0b8543cc21ccd7e6e0e6d1. Chain 2 (Bitcoin): anchored in block 953933 (2026-06-16T11:13:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f2e65eb-7302-40fc-9347-863a85b453b9.json and https://artists.proofprofile.net/proofs/artist/1f2e65eb-7302-40fc-9347-863a85b453b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).