Matt Spicer
type: MusicGroup
genre: indie folk
popularity: 3
followers: 334
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb62c901da9e1100dcb699df99b2f8f4bf61fca05ae718d50af05abe1ce7a9f01
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/55081e94-e7e9-41f5-8c43-82b2d84486d8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55081e94-e7e9-41f5-8c43-82b2d84486d8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/55081e94-e7e9-41f5-8c43-82b2d84486d8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb62c901da9e1100dcb699df99b2f8f4bf61fca05ae718d50af05abe1ce7a9f01","name":"Matt Spicer","registered_at":"2026-06-16T19:09:02Z","symbol":"NIM1147638","token_address":"0xf30c688a8f044f8a5d14b3b572549922830dd0ca","type":"artist","uuid":"55081e94-e7e9-41f5-8c43-82b2d84486d8"}
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 0xb62c901da9e1100dcb699df99b2f8f4bf61fca05ae718d50af05abe1ce7a9f01. 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/55081e94-e7e9-41f5-8c43-82b2d84486d8.json and https://artists.proofprofile.net/proofs/artist/55081e94-e7e9-41f5-8c43-82b2d84486d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xb62c901da9e1100dcb699df99b2f8f4bf61fca05ae718d50af05abe1ce7a9f01","name":"Matt Spicer","registered_at":"2026-06-16T19:09:02Z","symbol":"NIM1147638","token_address":"0xf30c688a8f044f8a5d14b3b572549922830dd0ca","type":"artist","uuid":"55081e94-e7e9-41f5-8c43-82b2d84486d8"}
album: Build You a Home
  type: MusicAlbum
  date published: 2018-06-18
  track: Build You a Home
    type: MusicRecording
    duration: PT4M27S
    duration ms: 267000
    explicit: false
    by artist: Matt Spicer
    in album: Build You a Home
      type: MusicAlbum
      date published: 2018-06-18
    genre: indie folk
    isrc code: UKQ461800001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T15:52:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2b934d0a621ee39bb382d54ef678005a39c4c29bb07bd19e66f91d164d374780
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958576
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958576
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKQ461800001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T16:22:28Z
    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 0x2b934d0a621ee39bb382d54ef678005a39c4c29bb07bd19e66f91d164d374780. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/UKQ461800001.
      date published: 2026-07-18T16:22:28Z
    audio: Build You a Home
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 153.975
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.387
      additional property: Energy
        type: PropertyValue
        value: 0.494
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.557
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.132
      additional property: Liveness
        type: PropertyValue
        value: 0.118
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.108
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.059
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Matt Spicer
  type: MusicAlbum
  date published: 2018-07-21