David Lance Callahan
type: MusicGroup
description: David Lance Callahan (also known as David Callahan) is an English musician, naturalist and writer. His music has been classified as rock, art rock, post-punk, garage rock, post-rock, experimental rock
popularity: 2
followers: 407
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xed98ec4111a52ebc05b5547ccec8de36035e827a4219c338c2c02139ed415e8c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/67342160-2235-4c28-bced-e5024de65aa2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/67342160-2235-4c28-bced-e5024de65aa2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/67342160-2235-4c28-bced-e5024de65aa2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xed98ec4111a52ebc05b5547ccec8de36035e827a4219c338c2c02139ed415e8c","name":"David Lance Callahan","registered_at":"2026-06-17T01:38:23Z","symbol":"NIM1240534","token_address":"0xa6482ed7e26a440d9218f413092e9f2d43f359c1","type":"artist","uuid":"67342160-2235-4c28-bced-e5024de65aa2"}
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 0xed98ec4111a52ebc05b5547ccec8de36035e827a4219c338c2c02139ed415e8c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67342160-2235-4c28-bced-e5024de65aa2.json and https://artists.proofprofile.net/proofs/artist/67342160-2235-4c28-bced-e5024de65aa2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xed98ec4111a52ebc05b5547ccec8de36035e827a4219c338c2c02139ed415e8c","name":"David Lance Callahan","registered_at":"2026-06-17T01:38:23Z","symbol":"NIM1240534","token_address":"0xa6482ed7e26a440d9218f413092e9f2d43f359c1","type":"artist","uuid":"67342160-2235-4c28-bced-e5024de65aa2"}
album: Strange Lovers
  type: MusicAlbum
  date published: 2019-01-25
album: She Passes Through the Night
  type: MusicAlbum
  date published: 2020-02-29
album: English Primitive I
  type: MusicAlbum
  date published: 2021-10-29
album: English Primitive II
  type: MusicAlbum
  date published: 2022-11-12
album: Free Radicals / Evil Magnets
  type: MusicAlbum
  date published: 2023-06-16
album: Down To The Marshes
  type: MusicAlbum
  date published: 2024-09-27
album: Kiss Chase (Manyfingers remix)
  type: MusicAlbum
  date published: 2025-04-10