The Middle Class
type: MusicGroup
genre: deathrock
genre: hardcore
genre: hardcore punk
genre: proto-punk
genre: punk
popularity: 12
followers: 4398
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0b5a59547c63ed9a51ac73b8acd65f443e3b8df32bd2cca3cff0cd03ce4bee8d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953778
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953778
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cc8d6929-fa39-45c5-b127-93ed1b6a2b56.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cc8d6929-fa39-45c5-b127-93ed1b6a2b56.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cc8d6929-fa39-45c5-b127-93ed1b6a2b56
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0b5a59547c63ed9a51ac73b8acd65f443e3b8df32bd2cca3cff0cd03ce4bee8d","name":"The Middle Class","registered_at":"2026-06-15T02:07:26Z","symbol":"NIM0648449","token_address":"0x413c664902802d1d62e9866b758cb7cd01b46744","type":"artist","uuid":"cc8d6929-fa39-45c5-b127-93ed1b6a2b56"}
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 0x0b5a59547c63ed9a51ac73b8acd65f443e3b8df32bd2cca3cff0cd03ce4bee8d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc8d6929-fa39-45c5-b127-93ed1b6a2b56.json and https://artists.proofprofile.net/proofs/artist/cc8d6929-fa39-45c5-b127-93ed1b6a2b56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x0b5a59547c63ed9a51ac73b8acd65f443e3b8df32bd2cca3cff0cd03ce4bee8d","name":"The Middle Class","registered_at":"2026-06-15T02:07:26Z","symbol":"NIM0648449","token_address":"0x413c664902802d1d62e9866b758cb7cd01b46744","type":"artist","uuid":"cc8d6929-fa39-45c5-b127-93ed1b6a2b56"}
album: Out of Vogue: The Early Material
  type: MusicAlbum
  date published: 2008
  track: You Belong
    type: MusicRecording
    duration: PT1M7S
    duration ms: 67320
    explicit: false
    by artist: The Middle Class
    in album: Out of Vogue: The Early Material
      type: MusicAlbum
      date published: 2008
    genre: deathrock
    genre: hardcore
    genre: hardcore punk
    genre: proto-punk
    genre: punk
    isrc code: USA6P0800002
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T19:49:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x673016367c05e6971de87b965f35d12ff1bf73fac050bf72c8c79481a5b26b43
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959061
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959061
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA6P0800002
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T22:49:42Z
    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 0x673016367c05e6971de87b965f35d12ff1bf73fac050bf72c8c79481a5b26b43. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:49:42Z), 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/USA6P0800002.
      date published: 2026-07-21T22:49:42Z
    audio: You Belong
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 89.707
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.43
      additional property: Energy
        type: PropertyValue
        value: 0.989
      additional property: Speechiness
        type: PropertyValue
        value: 0.061
      additional property: Acousticness
        type: PropertyValue
        value: 0.093
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.329
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.4
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.468
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Situations
    type: MusicRecording
    duration: PT1M45S
    duration ms: 105160
    explicit: false
    by artist: The Middle Class
    in album: Out of Vogue: The Early Material
      type: MusicAlbum
      date published: 2008
    genre: deathrock
    genre: hardcore
    genre: hardcore punk
    genre: proto-punk
    genre: punk
    isrc code: USA6P0800003
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T23:44:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x665f5032f9679d32b4983ac258038e2856b2cac15546c9cdc2d27546f06e3935
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958943
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958943
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA6P0800003
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T00:27:37Z
    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 0x665f5032f9679d32b4983ac258038e2856b2cac15546c9cdc2d27546f06e3935. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USA6P0800003.
      date published: 2026-07-21T00:27:37Z
    audio: Situations
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.08
      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: 0.411
      additional property: Energy
        type: PropertyValue
        value: 0.916
      additional property: Speechiness
        type: PropertyValue
        value: 0.08
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
track: A Skeleton at the Feast

A Skeleton at the Feast
type: MusicRecording
duration: PT4M17S
duration ms: 257521
explicit: false
by artist: The Middle Class
in album: Killed By Deathrock Vol. 2
  type: MusicAlbum
  date published: 2016-11-11
isrc code: US5NR1601902
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T11:57:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc0a6b4ee57111c3cb09310dfc57ad232ba1fb8eea268ce7d1ac21c0bbf7de92b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956351
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956351
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US5NR1601902
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-16T13:50:50Z
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
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+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 0xc0a6b4ee57111c3cb09310dfc57ad232ba1fb8eea268ce7d1ac21c0bbf7de92b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:50:50Z), 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/US5NR1601902.
  date published: 2026-07-16T13:50:50Z
audio: A Skeleton at the Feast
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 161.013
  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: 0.545
  additional property: Energy
    type: PropertyValue
    value: 0.762
  additional property: Speechiness
    type: PropertyValue
    value: 0.073
  additional property: Acousticness
    type: PropertyValue
    value: 0.038
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.006
  additional property: Liveness
    type: PropertyValue
    value: 0.188
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.525
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.106
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Acousticness
type: PropertyValue
value: 0.032

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.114

Valence (Positivity)
type: PropertyValue
value: 0.311

Loudness (dB)
type: PropertyValue
value: -6.57

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major