Yas or YAS may refer to: Yas (slang), an affirmative in English Yas (yacht), a superyacht built in 2011 in Abu Dhabi Yas (rapper), Iranian rapper Y.A.S., a French electronic music duo formed in 2
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 0xa7612e314e3dad0d3ef71e5114d3060e7d9f4495c9a16e371ce9cd69abc914f1. 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/d2889655-7fce-48a4-9cef-c6f017aa6bdd.json and https://artists.proofprofile.net/proofs/artist/d2889655-7fce-48a4-9cef-c6f017aa6bdd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).