Kayzer
type: MusicGroup
popularity: 6
followers: 66
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7704ec21558877700126b107bc13a9571db374fbb6372f5a2cba889e43fff8bd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7ffbc82-f09a-42a2-9dcd-c143387f3bf0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7ffbc82-f09a-42a2-9dcd-c143387f3bf0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e7ffbc82-f09a-42a2-9dcd-c143387f3bf0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
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 0x7704ec21558877700126b107bc13a9571db374fbb6372f5a2cba889e43fff8bd. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7ffbc82-f09a-42a2-9dcd-c143387f3bf0.json and https://artists.proofprofile.net/proofs/artist/e7ffbc82-f09a-42a2-9dcd-c143387f3bf0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
album: Nouveau Rebeu
  type: MusicAlbum
  date published: 2025-05-16
  track: Nouveau Rebeu
    type: MusicRecording
    duration: PT2M25S
    duration ms: 145528
    explicit: true
    by artist: Kayzer
    in album: Nouveau Rebeu
      type: MusicAlbum
      date published: 2025-05-16
    isrc code: QZNWZ2503823
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T02:56:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xeca95544463a6cc9784a2faf5c5354192abac35b09151887d40f3853ffe9a6ec
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958484
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958484
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWZ2503823
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T03:34:53Z
    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 0xeca95544463a6cc9784a2faf5c5354192abac35b09151887d40f3853ffe9a6ec. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWZ2503823.
      date published: 2026-07-18T03:34:53Z
    audio: Nouveau Rebeu
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 198.196
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 1
      additional property: Danceability
        type: PropertyValue
        value: 0.65
      additional property: Energy
        type: PropertyValue
        value: 0.669
      additional property: Speechiness
        type: PropertyValue
        value: 0.559
      additional property: Acousticness
        type: PropertyValue
        value: 0.165
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.097
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.324
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.588
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Tête Brisée
  type: MusicAlbum
  date published: 2025-08-08
album: Tête Brisée
  type: MusicAlbum
  date published: 2025-08-15
  track: Tête Brisée
    type: MusicRecording
    duration: PT2M30S
    duration ms: 150282
    explicit: true
    by artist: Kayzer
    in album: Tête Brisée
      type: MusicAlbum
      date published: 2025-08-15
    isrc code: QZWFU2528546
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T07:17:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcf52f24478a4c4094efc7ee2392de5aa55dba538b0033c4aba19c819b7441f62
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFU2528546
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0xcf52f24478a4c4094efc7ee2392de5aa55dba538b0033c4aba19c819b7441f62. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFU2528546.
      date published: 2026-07-05T10:01:46Z
    audio: Tête Brisée
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.167
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.537
      additional property: Energy
        type: PropertyValue
        value: 0.644
      additional property: Speechiness
        type: PropertyValue
        value: 0.447
      additional property: Acousticness
        type: PropertyValue
        value: 0.335
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.238
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.289
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Le Haqq

Loudness (dB)
type: PropertyValue
value: -8.907

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor

Le Haqq
type: MusicAlbum
date published: 2025-11-07
track: Le Haqq
  type: MusicRecording
  duration: PT2M37S
  duration ms: 157100
  explicit: true
  by artist: Kayzer
  in album: Le Haqq
    type: MusicAlbum
    date published: 2025-11-07
  isrc code: QT6EE2568586
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T14:05:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x631952cf4a24adc0917157ba5e3f4236923cc1bf4f99a13a5d795731dea9223c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956725
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956725
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6EE2568586
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T01:12:41Z
  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 0x631952cf4a24adc0917157ba5e3f4236923cc1bf4f99a13a5d795731dea9223c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT6EE2568586.
    date published: 2026-07-05T01:12:41Z
  audio: Le Haqq
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 137.021
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.586
    additional property: Energy
      type: PropertyValue
      value: 0.736
    additional property: Speechiness
      type: PropertyValue
      value: 0.46
    additional property: Acousticness
      type: PropertyValue
      value: 0.438
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.129
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.54
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.722
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major