Matthew Meyer
type: MusicGroup
description: Matthew Mark Meyer (born 4 March 1998) is a South African swimmer. He competed in the men's 1500 metre freestyle event at the 2016 Summer Olympics. He finished 41st in the heats with a time of 15:36.2
popularity: 28
followers: 7594
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xbd55faad881d7ac4418fde077f9d249929fe4042e56478f3f8103275252d2c15
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6a3d15f4-1bcb-4c3c-b65a-15cedd559f8a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6a3d15f4-1bcb-4c3c-b65a-15cedd559f8a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6a3d15f4-1bcb-4c3c-b65a-15cedd559f8a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbd55faad881d7ac4418fde077f9d249929fe4042e56478f3f8103275252d2c15","name":"Matthew Meyer","registered_at":"2026-06-11T23:33:18Z","symbol":"NIM0137759","token_address":"0x86361dc5dccd2a51577a3f93f2c6361eb216cd05","type":"artist","uuid":"6a3d15f4-1bcb-4c3c-b65a-15cedd559f8a"}
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 0xbd55faad881d7ac4418fde077f9d249929fe4042e56478f3f8103275252d2c15. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a3d15f4-1bcb-4c3c-b65a-15cedd559f8a.json and https://artists.proofprofile.net/proofs/artist/6a3d15f4-1bcb-4c3c-b65a-15cedd559f8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xbd55faad881d7ac4418fde077f9d249929fe4042e56478f3f8103275252d2c15","name":"Matthew Meyer","registered_at":"2026-06-11T23:33:18Z","symbol":"NIM0137759","token_address":"0x86361dc5dccd2a51577a3f93f2c6361eb216cd05","type":"artist","uuid":"6a3d15f4-1bcb-4c3c-b65a-15cedd559f8a"}
album: Moving Day
  type: MusicAlbum
  date published: 2019-09-18
  track: Moving Day
    type: MusicRecording
    duration: PT2M39S
    duration ms: 159455
    explicit: false
    by artist: Matthew Meyer
    in album: Moving Day
      type: MusicAlbum
      date published: 2019-09-18
    isrc code: QZHN51937727
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T16:57:44+00:00
    additional property: CopyrightChainExplorerURL
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958444
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958444
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN51937727
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:12:23Z
    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 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 0x890ad07b1b4e9b800dbb4ff998ce3ef9c11a04ee3678ef0b297f860eb8f0f114. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN51937727.
      date published: 2026-07-17T19:12:23Z
    audio: Moving Day
      type: AudioObject
      additional property: Tempo (BPM)
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        value: 168.171
      additional property: Musical Key
        type: PropertyValue
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
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      additional property: Danceability
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      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0.214
      additional property: Liveness
        type: PropertyValue
        value: 0.097
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.295
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.491
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Cardboard Spaceship
  type: MusicAlbum
  date published: 2020-06-22
album: Quiet Ride
  type: MusicAlbum
  date published: 2020-10-10