Grings may refer to: Dadeus Grings (born 1936), Brazilian bishop Harry Gring (1918–1992), American politician Inka Grings (born 1978), German football player Marlon Grings (born 1976), Brazilian
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 0xd1c7308d2a9cc2790f2c967e44a30efa8fdf46af8298f4cda37ad7f223199704. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf0701f5-df02-4467-a711-a159e4563fcf.json and https://artists.proofprofile.net/proofs/artist/cf0701f5-df02-4467-a711-a159e4563fcf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).