SR or sr may refer to: Arts and entertainment Science Reporter, a magazine "Sr.", a 2022 film featuring Roberts Downey Jr. and Sr. Businesses and organizations Politics Socialist Revolutionary P
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 0x7bd167c704153c844eb69f2acb794c168d92f1e801c8a8d69b8b4af61168fd72. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/368bc969-a31a-4213-b209-785430de02f8.json and https://artists.proofprofile.net/proofs/artist/368bc969-a31a-4213-b209-785430de02f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).