Metal Cardbot
type: MusicGroup
description: Metal Cardbot () is a South Korean animated children's television series produced by SAMG Entertainment. The series is written by Ryōta Yamaguchi, who has penned scripts for anime such as Medabots, Di
popularity: 6
followers: 262
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0bd211c2575076376dc844b0a7d6b804ca885dc6986a8e1182799dd6adb3c344
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953955
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953955
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2516bc3a-6612-4388-a2d5-c384693496f8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2516bc3a-6612-4388-a2d5-c384693496f8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2516bc3a-6612-4388-a2d5-c384693496f8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:29:53Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0bd211c2575076376dc844b0a7d6b804ca885dc6986a8e1182799dd6adb3c344","name":"Metal Cardbot","registered_at":"2026-06-16T02:24:14Z","symbol":"NIM0907821","token_address":"0x628bba41114b0ea92d083313fe27f2c5cd0ae690","type":"artist","uuid":"2516bc3a-6612-4388-a2d5-c384693496f8"}
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 0x0bd211c2575076376dc844b0a7d6b804ca885dc6986a8e1182799dd6adb3c344. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2516bc3a-6612-4388-a2d5-c384693496f8.json and https://artists.proofprofile.net/proofs/artist/2516bc3a-6612-4388-a2d5-c384693496f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x0bd211c2575076376dc844b0a7d6b804ca885dc6986a8e1182799dd6adb3c344","name":"Metal Cardbot","registered_at":"2026-06-16T02:24:14Z","symbol":"NIM0907821","token_address":"0x628bba41114b0ea92d083313fe27f2c5cd0ae690","type":"artist","uuid":"2516bc3a-6612-4388-a2d5-c384693496f8"}
album: Metal Cardbot Opening
  type: MusicAlbum
  date published: 2023-03-28
  track: Metal Cardbot Opening
    type: MusicRecording
    duration: PT1M15S
    duration ms: 75750
    explicit: false
    by artist: Metal Cardbot
    in album: Metal Cardbot Opening
      type: MusicAlbum
      date published: 2023-03-28
    isrc code: KRB472300430
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T09:03:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcf4f876163be00cf10fa84eb4ea81afe0ccf7b23ed646349d62f1b2a4982c999
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956484
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956484
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB472300430
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T10:47:44Z
    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 0xcf4f876163be00cf10fa84eb4ea81afe0ccf7b23ed646349d62f1b2a4982c999. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/KRB472300430.
      date published: 2026-07-03T10:47:44Z
    audio: Metal Cardbot Opening
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.91
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.588
      additional property: Energy
        type: PropertyValue
        value: 0.884
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.1
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.783
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.962
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.118
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major