Taz or TAZ may refer to: Geography Taz (river), a river in western Siberia, Russia Taz Estuary, the estuary of the river Taz in Russia People Taz people, an ethnic group in Russia Taz language
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 0x91ecb3f34f14c64ca5e45f8e26fc1027c9e47b125ce5c0c38a6148d952c153a2. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ac41b54-ad43-4401-b6f2-8e28504a006e.json and https://artists.proofprofile.net/proofs/artist/5ac41b54-ad43-4401-b6f2-8e28504a006e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Daru Vich Pyaar (From "Guest Iin London")