Anthony Depula (June 28, 1966 – April 4, 2009), known professionally as Tony D, was an American hip hop artist from Imperial Valley, California. Career Although he was an MC and a DJ, he was most fam
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 0xf08928780dbc6ea8acc85fc8ee19fa0b8632ed476ff2fb49a9165eb32daff5cc. 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/b1b721da-e4c9-4d79-9b8a-bc0554a09b15.json and https://artists.proofprofile.net/proofs/artist/b1b721da-e4c9-4d79-9b8a-bc0554a09b15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).