Murder Squad
type: MusicGroup
genre: death metal
genre: grindcore
description: Murder Squad is a Swedish death metal band that was formed in 1993 in Stockholm. It consists of Rickard Cabeza, Matti Kärki, Uffe Cederlund, and Peter Stjärnwind. It is a side project of two Dismember
popularity: 9
followers: 918
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x875f2ec7827eddff1e85acfc2eb9562441ffa398247128b59436983381076f12
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b5c0a10f-28bc-4fd5-96ba-ca900fa4a023.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b5c0a10f-28bc-4fd5-96ba-ca900fa4a023.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b5c0a10f-28bc-4fd5-96ba-ca900fa4a023
additional property: OTSTimestamp
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  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x875f2ec7827eddff1e85acfc2eb9562441ffa398247128b59436983381076f12","name":"Murder Squad","registered_at":"2026-06-20T14:46:57Z","symbol":"NIM1633396","token_address":"0xefe6d40326a09a5b7fc435a59da32d91589e3a07","type":"artist","uuid":"b5c0a10f-28bc-4fd5-96ba-ca900fa4a023"}
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 0x875f2ec7827eddff1e85acfc2eb9562441ffa398247128b59436983381076f12. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5c0a10f-28bc-4fd5-96ba-ca900fa4a023.json and https://artists.proofprofile.net/proofs/artist/b5c0a10f-28bc-4fd5-96ba-ca900fa4a023.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x875f2ec7827eddff1e85acfc2eb9562441ffa398247128b59436983381076f12","name":"Murder Squad","registered_at":"2026-06-20T14:46:57Z","symbol":"NIM1633396","token_address":"0xefe6d40326a09a5b7fc435a59da32d91589e3a07","type":"artist","uuid":"b5c0a10f-28bc-4fd5-96ba-ca900fa4a023"}
album: Unsane, Insane and Mentally Deranged
  type: MusicAlbum
  date published: 2002
  track: Slowly Burnt To Death - Murder Squad
    type: MusicRecording
    duration: PT3M19S
    duration ms: 199693
    explicit: true
    by artist: Murder Squad
    in album: Unsane, Insane and Mentally Deranged
      type: MusicAlbum
      date published: 2002
    genre: death metal
    genre: grindcore
    isrc code: USA560452392
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560452392
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0xa15e2a28edcce441bf3e41d05dc4367137b12dbc98ad0ab0f0f7877f2a031812. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA560452392.
      date published: 2026-07-06T01:25:57Z
    audio: Slowly Burnt To Death - Murder Squad
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 186.416
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.071
      additional property: Energy
        type: PropertyValue
        value: 0.889
      additional property: Speechiness
        type: PropertyValue
        value: 0.061
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.779
      additional property: Liveness
        type: PropertyValue
        value: 0.25
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.17
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.454
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Ravenous Murderous
  type: MusicAlbum
  date published: 2003-04-28
album: Ravenous Murderous
  type: MusicAlbum
  date published: 2003-04-28