Shivi was an ancient Indo-Aryan tribe of north-western South Asia whose existence is attested during the Iron Age (c.1100–500 BCE). The members of the Shivi tribe were called the Shivis. 350px|thumb|r
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 0xf548240610d2ed6d50a534eeecf9896a8bd6fc4108d1768da48b4f188ad915c9. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5be1713-f395-4964-8ff1-e78a6168f374.json and https://artists.proofprofile.net/proofs/artist/e5be1713-f395-4964-8ff1-e78a6168f374.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).