Mängupoiss Käru
type: MusicGroup
popularity: 10
followers: 264
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfbb48762b78a8c11989bd0550fd742c4fe8103514f7a6855f2c51c0ef963d016
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/83100e5c-ffa4-415b-9491-900eccefad93.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/83100e5c-ffa4-415b-9491-900eccefad93.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/83100e5c-ffa4-415b-9491-900eccefad93
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfbb48762b78a8c11989bd0550fd742c4fe8103514f7a6855f2c51c0ef963d016","name":"Mängupoiss Käru","registered_at":"2026-06-17T11:16:11Z","symbol":"NIM1378347","token_address":"0xb8f6a02ef31ee79a15ee58736edc09b5461e5b56","type":"artist","uuid":"83100e5c-ffa4-415b-9491-900eccefad93"}
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 0xfbb48762b78a8c11989bd0550fd742c4fe8103514f7a6855f2c51c0ef963d016. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83100e5c-ffa4-415b-9491-900eccefad93.json and https://artists.proofprofile.net/proofs/artist/83100e5c-ffa4-415b-9491-900eccefad93.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xfbb48762b78a8c11989bd0550fd742c4fe8103514f7a6855f2c51c0ef963d016","name":"Mängupoiss Käru","registered_at":"2026-06-17T11:16:11Z","symbol":"NIM1378347","token_address":"0xb8f6a02ef31ee79a15ee58736edc09b5461e5b56","type":"artist","uuid":"83100e5c-ffa4-415b-9491-900eccefad93"}
album: R.I.P.
  type: MusicAlbum
  date published: 2021-07-09
  track: Nädalavahetus on Mu Lemmiktoit
    type: MusicRecording
    duration: PT2M53S
    duration ms: 173374
    explicit: false
    by artist: Mängupoiss Käru
    in album: R.I.P.
      type: MusicAlbum
      date published: 2021-07-09
    isrc code: TCAFQ2163410
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-22T12:04:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb3770287e3f2ec4699009b0b15957ccb93e165103bba614ef7019020bc093324
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFQ2163410
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    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 0xb3770287e3f2ec4699009b0b15957ccb93e165103bba614ef7019020bc093324. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFQ2163410.
      date published: 2026-07-02T03:55:08Z
    audio: Nädalavahetus on Mu Lemmiktoit
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 102.745
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.747
      additional property: Energy
        type: PropertyValue
        value: 0.728
      additional property: Speechiness
        type: PropertyValue
        value: 0.193
      additional property: Acousticness
        type: PropertyValue
        value: 0.177
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.156
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.369
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.431
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Kuller (Remix)
    type: MusicRecording
    duration: PT1M32S
    duration ms: 92204
    explicit: false
    by artist: Mängupoiss Käru
    in album: R.I.P.
      type: MusicAlbum
      date published: 2021-07-09
    isrc code: TCAFQ2163771
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-11T20:52:56+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb0ccaac5e095a05b019540717f81eb8b66c1ca728e4b01f7c9b18dba68d1346c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953520
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953520
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFQ2163771
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T13:32:09Z
    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 0xb0ccaac5e095a05b019540717f81eb8b66c1ca728e4b01f7c9b18dba68d1346c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFQ2163771.
      date published: 2026-06-13T13:32:09Z
    audio: Kuller (Remix)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 106.452
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.851
      additional property: Energy
        type: PropertyValue
        value: 0.374
      additional property: Speechiness
        type: PropertyValue
        value: 0.142
      additional property: Acousticness
        type: PropertyValue
        value: 0.097
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.129
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.406
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.955
      additional property: Key Name
      additional property: Mode Name

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Minor