Mark Lemhouse
type: MusicGroup
genre: celtic rock
description: Mark Lemhouse is an American singer, songwriter, and guitarist known for releasing critically acclaimed solo albums as well as collaborating with Black Francis of The Pixies serving as producer for th
popularity: 2
followers: 240
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6f1bf180efbdfd81e834aa4b30024e0ec92d43979affceac119b03bde92f5792
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fafe999e-027d-45cb-8857-2b51f501e8b7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fafe999e-027d-45cb-8857-2b51f501e8b7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fafe999e-027d-45cb-8857-2b51f501e8b7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6f1bf180efbdfd81e834aa4b30024e0ec92d43979affceac119b03bde92f5792","name":"Mark Lemhouse","registered_at":"2026-06-21T16:43:22Z","symbol":"NIM1978042","token_address":"0x501b7d0b6a46448294ff6f12330d54ed15463d9e","type":"artist","uuid":"fafe999e-027d-45cb-8857-2b51f501e8b7"}
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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1bf180efbdfd81e834aa4b30024e0ec92d43979affceac119b03bde92f5792. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fafe999e-027d-45cb-8857-2b51f501e8b7.json and https://artists.proofprofile.net/proofs/artist/fafe999e-027d-45cb-8857-2b51f501e8b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x6f1bf180efbdfd81e834aa4b30024e0ec92d43979affceac119b03bde92f5792","name":"Mark Lemhouse","registered_at":"2026-06-21T16:43:22Z","symbol":"NIM1978042","token_address":"0x501b7d0b6a46448294ff6f12330d54ed15463d9e","type":"artist","uuid":"fafe999e-027d-45cb-8857-2b51f501e8b7"}
album: Big Lonesome Radio
  type: MusicAlbum
  date published: 2006-10-24
album: The Great American Yard Sale
  type: MusicAlbum
  date published: 2006-10-24
album: Big Lonesome Radio
  type: MusicAlbum
  date published: 2009-01-27
album: The Great American Yard Sale
  type: MusicAlbum
  date published: 2009-01-27
album: Better Days
  type: MusicAlbum
  date published: 2025-02-06