SG, Sg or sg may refer to: Arts and entertainment Music "SG" (song), a 2021 song by DJ Snake, Ozuna, Lisa, and Megan Thee Stallion Gibson SG, an electric guitar manufactured by Gibson Guitar Corpor
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 0xa092e10e2fdda9536b2bccde0ae7953082a1329a67506f077bc22bf6c0664ed1. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cede566-dbdc-41b6-a83d-14f34f9dc3d4.json and https://artists.proofprofile.net/proofs/artist/8cede566-dbdc-41b6-a83d-14f34f9dc3d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).