"Dead and Gone" is a song by American rapper T.I. featuring singer Justin Timberlake. It became available for digital download in September 2008 and was released on January 12, 2009 as the eighth sing
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 0x8e229e5172f35cffa4ceef24a2788beedf06830c09943ecc0c630aab65caa324. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bbd1843-3c06-4930-921b-9d238b170e94.json and https://artists.proofprofile.net/proofs/artist/4bbd1843-3c06-4930-921b-9d238b170e94.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).