K6 or K-6 may refer to: Locations K6 (mountain), a mountain in Pakistan K6 pipe, a geological formation in Northern Alberta, Canada K6, shorthand for ul. Konwiktorska 6, address of the General Kaz
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 0x25542e1f087b8b2321f5d8029f077473473058f31c5c36d8aff804feb6b026a0. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3db195fe-a2d6-4363-a5a8-a238b6600c69.json and https://artists.proofprofile.net/proofs/artist/3db195fe-a2d6-4363-a5a8-a238b6600c69.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).