X Plastaz is a Tanzanian hip hop musical group based in Arusha and founded in 1996. They are one of the most popular acts in the Tanzanian hip hop scene. Their style mixes elements from international
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800bc17b3efda45c6949a89a503ae645d6593be60d7101d35bb4bbc0a6d21efb. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa286419-54d6-4ac1-a007-c65d0128071e.json and https://artists.proofprofile.net/proofs/artist/aa286419-54d6-4ac1-a007-c65d0128071e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).