Robert Coleman Thomas (born ), known professionally as Rob49, is an American rapper from New Orleans, Louisiana. He is best known for his guest appearance alongside 21 Savage on Travis Scott's 2023 so
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 0x4e79714eb14ddb3cef384cc9606f5d61702a7d631eced66d8458412ffed3ae8a. 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/b4ebb23a-f987-4961-a251-2743f3d94403.json and https://artists.proofprofile.net/proofs/artist/b4ebb23a-f987-4961-a251-2743f3d94403.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).