"Free Smoke" is a song by Canadian rapper Drake from his album, More Life (2017). The song was released on April 18, 2017, as the third single from More Life after "Passionfruit". The song features 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 0x50e608596dbd8add4f1c80e4add17e3b14277fcc413925171ee4f9432b817bd5. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c323a604-2517-4b47-9e5f-58330095f11f.json and https://artists.proofprofile.net/proofs/artist/c323a604-2517-4b47-9e5f-58330095f11f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).