In many languages, a plural (sometimes abbreviated as pl., pl, , or ), is one of the values of the grammatical category of number. The plural of a noun typically denotes a quantity greater than the de
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 0x316cd1fc270d41a6f83f8b977ee1bc63e36227d19b485ca2d4ddc2c781f63838. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9aabcc8-60df-4ef2-b61d-eb4688814d77.json and https://artists.proofprofile.net/proofs/artist/d9aabcc8-60df-4ef2-b61d-eb4688814d77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).