Class A'z
type: MusicGroup
description: Class A'z are an Irish rap collective, whose members include the artists Terawrizt and Redzer. Former members of the group include Nucentz, Rawsoul and Collie. Irish Hip Hop artists Nugget, Siyo, Jo
popularity: 9
followers: 1226
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xd29b925c875d096b07842e8fe994c68f38cbe85746bccf2dc9b23ae029b8c202
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/312054b7-acb4-477b-887a-b0fb409ffe05.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/312054b7-acb4-477b-887a-b0fb409ffe05.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/312054b7-acb4-477b-887a-b0fb409ffe05
additional property: OTSTimestamp
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  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0xd29b925c875d096b07842e8fe994c68f38cbe85746bccf2dc9b23ae029b8c202. 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/312054b7-acb4-477b-887a-b0fb409ffe05.json and https://artists.proofprofile.net/proofs/artist/312054b7-acb4-477b-887a-b0fb409ffe05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xd29b925c875d096b07842e8fe994c68f38cbe85746bccf2dc9b23ae029b8c202","name":"Class A'z","registered_at":"2026-06-16T06:43:22Z","symbol":"NIM0969717","token_address":"0x9fa7dc3b93f39d964ad63f7fdeb2c79e9e395f56","type":"artist","uuid":"312054b7-acb4-477b-887a-b0fb409ffe05"}
album: Class A'z - Sin City - Single
  type: MusicAlbum
  date published: 2007-12-31
album: Guns of Dublin
  type: MusicAlbum
  date published: 2011-07-09
  track: Guns of Dublin
    type: MusicRecording
    duration: PT3M35S
    duration ms: 215960
    explicit: false
    by artist: Class A'z
    in album: Guns of Dublin
      type: MusicAlbum
      date published: 2011-07-09
    isrc code: TCAAZ1123782
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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    additional property: OTSHash
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAAZ1123782
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xdfeeb7c823edfc795e5783b1be2c4345ac51fd2b1379a1e4c7dfa411f387681a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAAZ1123782.
      date published: 2026-07-04T10:04:33Z
    audio: Guns of Dublin
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.029
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.886
      additional property: Energy
        type: PropertyValue
        value: 0.626
      additional property: Speechiness
        type: PropertyValue
        value: 0.08
      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.09
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.787
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.067
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: I'm Back
  type: MusicAlbum
  date published: 2012-08-15
album: I'm Back
  type: MusicAlbum
  date published: 2012-08-15
album: The On Tick Mixtape
  type: MusicAlbum
  date published: 2012-10-20
album: Twenty 13
  type: MusicAlbum
  date published: 2013-02-08
album: Twenty 13
  type: MusicAlbum
  date published: 2013-02-08
album: Just Bars
  type: MusicAlbum
  date published: 2013-04-15
album: Trinity
  type: MusicAlbum
  date published: 2013-08-30
album: Trinity
  type: MusicAlbum
  date published: 2013-08-30
album: Home Invasion
  type: MusicAlbum
  date published: 2014-07-18
album: The Red Pill
  type: MusicAlbum
  date published: 2015-03-07
album: The Blue Pill
  type: MusicAlbum
  date published: 2016-02-02
album: Declassafied
  type: MusicAlbum
  date published: 2018-06-22