Yakuza
type: MusicGroup
genre: avant-garde
genre: progressive metal
genre: sludge metal
genre: stoner rock
description: , also known as , or simply the Japanese Mafia, are members of transnational organized crime syndicates originating in Japan. The Japanese police and media (by request of the police) call them , while
popularity: 9
followers: 5391
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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 0x0593a8bb4bddbb00429382380b25e3238e3726c2f2c934c28fe9b44db4736432. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b52b828-e475-4268-b07b-21c1d531a4ed.json and https://artists.proofprofile.net/proofs/artist/3b52b828-e475-4268-b07b-21c1d531a4ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T02:39:28Z
album: Way Of The Dead
  type: MusicAlbum
  date published: 2002
album: Way Of The Dead
  type: MusicAlbum
  date published: 2002
album: Way Of The Dead
  type: MusicAlbum
  date published: 2002
album: Way of the Dead
  type: MusicAlbum
  date published: 2002-10-15
album: Way of the Dead
  type: MusicAlbum
  date published: 2002-10-15
album: Samsara
  type: MusicAlbum
  date published: 2006-03-21
album: Samsara
  type: MusicAlbum
  date published: 2006-03-21
album: Samsara
  type: MusicAlbum
  date published: 2006-03-21
album: Transmutations
  type: MusicAlbum
  date published: 2007-08-06
album: Transmutations
  type: MusicAlbum
  date published: 2007-08-07
album: Of Seismic Consequence
  type: MusicAlbum
  date published: 2010-06-22
album: Beyul
  type: MusicAlbum
  date published: 2012-10-16
album: Kabuki Mono
  type: MusicAlbum
  date published: 2014-08-05
album: Alice
  type: MusicAlbum
  date published: 2023-03-03
album: Psychic Malaise
  type: MusicAlbum
  date published: 2023-04-14
album: Sutra
  type: MusicAlbum
  date published: 2023-05-19
album: Sutra
  type: MusicAlbum
  date published: 2023-05-26
track: Lucifer Sam

Lucifer Sam
type: MusicRecording
duration: PT3M36S
duration ms: 216426
explicit: false
by artist: Yakuza
in album: Like Black Holes in the Sky: The Tribute to Syd Barrett
  type: MusicAlbum
  date published: 2008-08-19
isrc code: USEWC0881293
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEWC0881293
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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  value: true
additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e838213bb5f20149bdfdf46dd4db626d35330c14674560a056c76d90e335630. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USEWC0881293.
  date published: 2026-07-08T03:20:19Z
audio: Lucifer Sam
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.175
  additional property: Energy
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.558
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.112
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.411
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor