Ping may refer to: Arts and entertainment Fictional characters Ping, a domesticated Chinese duck in the illustrated book The Story about Ping, first published in 1933 Ping, a minor character in
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 0xbeae31a230f8112fe4a4f6f5eb8fe5d596c9e917cf2b27caca01f01c9a757372. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28d309a6-f7f7-44d5-9342-b41766e73ee9.json and https://artists.proofprofile.net/proofs/artist/28d309a6-f7f7-44d5-9342-b41766e73ee9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).