First Class
type: MusicGroup
description: First class (or 1st class, Firstclass) generally implies a high level of service, importance or quality. Specific uses of the term include: Books and comics First Class, a comic strip in The Dandy (
popularity: 2
followers: 53
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0b9075013f55530c8ec92bbd921bc0b45992fdc53d21e8e6c104689dd663d683
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6b646588-c8ec-4e45-a2a2-111878ab4ba3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6b646588-c8ec-4e45-a2a2-111878ab4ba3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6b646588-c8ec-4e45-a2a2-111878ab4ba3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0b9075013f55530c8ec92bbd921bc0b45992fdc53d21e8e6c104689dd663d683","name":"First Class","registered_at":"2026-06-17T03:04:53Z","symbol":"NIM1261172","token_address":"0x6582668608ac53fec489c735b74bd6cbeeed8d28","type":"artist","uuid":"6b646588-c8ec-4e45-a2a2-111878ab4ba3"}
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 0x0b9075013f55530c8ec92bbd921bc0b45992fdc53d21e8e6c104689dd663d683. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b646588-c8ec-4e45-a2a2-111878ab4ba3.json and https://artists.proofprofile.net/proofs/artist/6b646588-c8ec-4e45-a2a2-111878ab4ba3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x0b9075013f55530c8ec92bbd921bc0b45992fdc53d21e8e6c104689dd663d683","name":"First Class","registered_at":"2026-06-17T03:04:53Z","symbol":"NIM1261172","token_address":"0x6582668608ac53fec489c735b74bd6cbeeed8d28","type":"artist","uuid":"6b646588-c8ec-4e45-a2a2-111878ab4ba3"}
album: "Feel My Grind"
  type: MusicAlbum
  date published: 2023-06-18
album: World War
  type: MusicAlbum
  date published: 2023-07-04
album: Hip Hop in Ya Ear
  type: MusicAlbum
  date published: 2023-08-25
album: Too many Losses
  type: MusicAlbum
  date published: 2023-11-03
album: I've got somethin' to say...
  type: MusicAlbum
  date published: 2023-12-12
album: I've got somethin' to say...
  type: MusicAlbum
  date published: 2023-12-14
album: I've got somethin' to say(Freestyle)
  type: MusicAlbum
  date published: 2023-12-27
album: Till Thee End
  type: MusicAlbum
  date published: 2024-02-17
album: I've got Somethin' to say....(Deluxe Edition)
  type: MusicAlbum
  date published: 2024-03-25
album: Brighter Days
  type: MusicAlbum
  date published: 2024-04-04
album: Fair Amount
  type: MusicAlbum
  date published: 2024-07-12
album: Cease The Extermination
  type: MusicAlbum
  date published: 2024-08-23
album: For the Love of Hip Hop
  type: MusicAlbum
  date published: 2024-08-30
album: Larry Legend
  type: MusicAlbum
  date published: 2024-10-04
album: Worldwide Choppaz
  type: MusicAlbum
  date published: 2024-11-08
album: For The Love of Hip Hop(Deluxe Edition)
  type: MusicAlbum
  date published: 2025-01-17
album: City Lights
  type: MusicAlbum
  date published: 2025-02-21
album: God's Time
  type: MusicAlbum
  date published: 2025-03-21
album: Godlike=Eternal Jewels
  type: MusicAlbum
  date published: 2025-05-02
album: Forgive,don't forget
  type: MusicAlbum
  date published: 2025-06-27
album: Trust
  type: MusicAlbum
  date published: 2025-07-18
album: Hardknockz
  type: MusicAlbum
  date published: 2025-09-05
  track: Menace
    type: MusicRecording
    duration: PT2M5S
    duration ms: 125828
    explicit: true
    by artist: First Class
    in album: Hardknockz
      type: MusicAlbum
      date published: 2025-09-05
    isrc code: QZZ7Q2596712
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T13:31:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9a4f849b61a57c85c1e2617132b673b7f95c51a9866bc377fddb0833d4de0efb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958166
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958166
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7Q2596712
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T15:55:19Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4f849b61a57c85c1e2617132b673b7f95c51a9866bc377fddb0833d4de0efb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7Q2596712.
      date published: 2026-07-15T15:55:19Z
    audio: Menace
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.025
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.83
      additional property: Energy
        type: PropertyValue
        value: 0.679
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.094
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.134
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.667
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Afterlife
    type: MusicRecording
    duration: PT3M27S
    duration ms: 207911
    explicit: true
    by artist: First Class
    in album: Hardknockz
      type: MusicAlbum
      date published: 2025-09-05
    isrc code: QZZ7Q2596716
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Afterlife
album: Hardknockz(Freestyle)
album: Senorita/Hombre Casada

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-03T07:01:00+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x74c7ea15610b6ce66b1a9842900d7f47e9a8a9cf02540ac3c29ca7f1f8af6fb2

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956500

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956500

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7Q2596716

OTSTimestamp
type: PropertyValue
value: 2026-07-03T13:55:21Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c7ea15610b6ce66b1a9842900d7f47e9a8a9cf02540ac3c29ca7f1f8af6fb2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZZ7Q2596716.
date published: 2026-07-03T13:55:21Z

Afterlife
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 79.95
additional property: Musical Key
  type: PropertyValue
  value: 1
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.757
additional property: Energy
  type: PropertyValue
  value: 0.655
additional property: Speechiness
  type: PropertyValue
  value: 0.177
additional property: Acousticness
  type: PropertyValue
  value: 0
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.151
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.437
additional property: Loudness (dB)
  type: PropertyValue
  value: -6.926
additional property: Key Name
  type: PropertyValue
  value: C#
additional property: Mode Name
  type: PropertyValue
  value: Major

Hardknockz(Freestyle)
type: MusicAlbum
date published: 2025-09-19

Senorita/Hombre Casada
type: MusicAlbum
date published: 2025-11-07