ITS, its or it's may refer to: Language It's, an English contraction of it is or it has Its (pronoun), the possessive form of the pronoun it Itsekiri language (ISO 639 language code its), a langua
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 0x817bef3ec3b2308b3c189431ec2c063b6074c5616479141727efe48334b06ab7. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c3ce255-beb5-45ad-b37b-4da3be02b190.json and https://artists.proofprofile.net/proofs/artist/7c3ce255-beb5-45ad-b37b-4da3be02b190.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).