kohi
type: MusicGroup
description: KOHI (1600 AM) is a radio station in St. Helens, north of Portland, Oregon, on U.S. Route 30. It serves the cities of St. Helens, Scappoose, Salmon Creek, La Center, Woodland, and Kalama, the last fo
popularity: 3
followers: 259
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x890c2c916709df37b8af492c50c771baa6644ad4a4ff05d49a26f9cd1882ad5b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954115
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954115
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/78b6c8b8-0c5c-43ea-a022-812127baa85a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/78b6c8b8-0c5c-43ea-a022-812127baa85a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/78b6c8b8-0c5c-43ea-a022-812127baa85a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T15:44:10Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890c2c916709df37b8af492c50c771baa6644ad4a4ff05d49a26f9cd1882ad5b. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78b6c8b8-0c5c-43ea-a022-812127baa85a.json and https://artists.proofprofile.net/proofs/artist/78b6c8b8-0c5c-43ea-a022-812127baa85a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T15:44:10Z
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