Postcards From Mars
type: MusicGroup
genre: indie folk
popularity: 15
followers: 16776
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8842c6df3c864e6dcecfeadacf7c39ec1f98e51b7644f1c98d21cc3d960ee483
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953674
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953674
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c99c468-5778-4d10-941b-b4f7ec0c8f84.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c99c468-5778-4d10-941b-b4f7ec0c8f84.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5c99c468-5778-4d10-941b-b4f7ec0c8f84
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:07:16Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8842c6df3c864e6dcecfeadacf7c39ec1f98e51b7644f1c98d21cc3d960ee483","name":"Postcards From Mars","registered_at":"2026-06-14T14:07:31Z","symbol":"NIM0476656","token_address":"0x50c3b4590c83998cdb41a32e918082bee1ad6b25","type":"artist","uuid":"5c99c468-5778-4d10-941b-b4f7ec0c8f84"}
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 0x8842c6df3c864e6dcecfeadacf7c39ec1f98e51b7644f1c98d21cc3d960ee483. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c99c468-5778-4d10-941b-b4f7ec0c8f84.json and https://artists.proofprofile.net/proofs/artist/5c99c468-5778-4d10-941b-b4f7ec0c8f84.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:07:16Z
  text: {"copyright_id":"0x8842c6df3c864e6dcecfeadacf7c39ec1f98e51b7644f1c98d21cc3d960ee483","name":"Postcards From Mars","registered_at":"2026-06-14T14:07:31Z","symbol":"NIM0476656","token_address":"0x50c3b4590c83998cdb41a32e918082bee1ad6b25","type":"artist","uuid":"5c99c468-5778-4d10-941b-b4f7ec0c8f84"}
album: One / Four
  type: MusicAlbum
  date published: 2014-04-01
album: Two / Four
  type: MusicAlbum
  date published: 2014-07-01
album: Three / Four
  type: MusicAlbum
  date published: 2015-02-01
album: Four / Four
  type: MusicAlbum
  date published: 2015-07-01
album: Breathe
  type: MusicAlbum
  date published: 2016-02-16
album: Growth
  type: MusicAlbum
  date published: 2016-04-08
  track: Into the Unknown
    type: MusicRecording
    duration: PT3M40S
    duration ms: 220535
    explicit: false
    by artist: Postcards From Mars
    in album: Growth
      type: MusicAlbum
      date published: 2016-04-08
    genre: indie folk
    isrc code: NLWD81600008
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-14T20:53:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x64f0b72084c1730ba829d8d216b2f673c1f49a51a40c7797dc691f72b199df03
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 958063
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958063
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLWD81600008
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-14T21:07:34Z
    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 0x64f0b72084c1730ba829d8d216b2f673c1f49a51a40c7797dc691f72b199df03. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/NLWD81600008.
      date published: 2026-07-14T21:07:34Z
    audio: Into the Unknown
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.945
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.666
      additional property: Energy
        type: PropertyValue
        value: 0.333
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.859
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.005
      additional property: Liveness
        type: PropertyValue
        value: 0.125
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.383
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.316
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: The Whale
  type: MusicAlbum
  date published: 2017-08-25
album: Golden
  type: MusicAlbum
  date published: 2017-11-03
album: Swallow
  type: MusicAlbum
  date published: 2018-01-12
album: The Others
  type: MusicAlbum
  date published: 2023-02-24
album: In Every Direction
  type: MusicAlbum
  date published: 2023-03-24
album: River
  type: MusicAlbum
  date published: 2023-04-21
album: ego death
  type: MusicAlbum
  date published: 2023-05-12