Missing in Action
type: MusicGroup
description: thumb|Grave of an unknown British combatant, killed in 1943 during the Battle of Leros. Because his identity is unknown, he is missing in action. thumb|Grave of 12 unknown British and/or Commonwealth
popularity: 7
followers: 351
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xae543be715427af6018a031bb1aeffec153fcae3fa6b129e374272f6c20a7465
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9fc9bb27-55d1-4812-9dd4-e3ff6b2df7e3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9fc9bb27-55d1-4812-9dd4-e3ff6b2df7e3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9fc9bb27-55d1-4812-9dd4-e3ff6b2df7e3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xae543be715427af6018a031bb1aeffec153fcae3fa6b129e374272f6c20a7465","name":"Missing in Action","registered_at":"2026-06-20T05:23:55Z","symbol":"NIM1524697","token_address":"0x9a331b77b006360fd1a19c31c6e0cbaabbd4c3a2","type":"artist","uuid":"9fc9bb27-55d1-4812-9dd4-e3ff6b2df7e3"}
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 0xae543be715427af6018a031bb1aeffec153fcae3fa6b129e374272f6c20a7465. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fc9bb27-55d1-4812-9dd4-e3ff6b2df7e3.json and https://artists.proofprofile.net/proofs/artist/9fc9bb27-55d1-4812-9dd4-e3ff6b2df7e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0xae543be715427af6018a031bb1aeffec153fcae3fa6b129e374272f6c20a7465","name":"Missing in Action","registered_at":"2026-06-20T05:23:55Z","symbol":"NIM1524697","token_address":"0x9a331b77b006360fd1a19c31c6e0cbaabbd4c3a2","type":"artist","uuid":"9fc9bb27-55d1-4812-9dd4-e3ff6b2df7e3"}
album: Conception
  type: MusicAlbum
  date published: 2017-08-25
  track: Starburst
    type: MusicRecording
    duration: PT4M2S
    duration ms: 242190
    explicit: false
    by artist: Missing in Action
    in album: Conception
      type: MusicAlbum
      date published: 2017-08-25
    isrc code: USHM21786707
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T18:02:14+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc60cf1f8d55ee07150f8ab78bebf5d92f6d8c82ec1d0975608e07e9857afe0af
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958596
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958596
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21786707
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T18:42:38Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60cf1f8d55ee07150f8ab78bebf5d92f6d8c82ec1d0975608e07e9857afe0af. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21786707.
      date published: 2026-07-18T18:42:38Z
    audio: Starburst
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 81.331
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.26
      additional property: Energy
        type: PropertyValue
        value: 0.721
      additional property: Speechiness
        type: PropertyValue
        value: 0.071
      additional property: Acousticness
        type: PropertyValue
        value: 0.586
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.646
      additional property: Liveness
        type: PropertyValue
        value: 0.139
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.186
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.375
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor