RULER
type: MusicGroup
description: thumb|right|upright=1.3|A variety of rulers thumb|right|A carpenter's rule thumb|right|Retractable flexible rule or tape measure thumb|right|A closeup of a steel ruler thumb|A ruler in combination wit
popularity: 4
followers: 432
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x42a7af3b17d0464c12711f5a4f5c07cc6c162ffaa23e3395c0e7b47d0a01eb85
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e111b4dc-4a14-4334-b66f-1941a925c166.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e111b4dc-4a14-4334-b66f-1941a925c166.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e111b4dc-4a14-4334-b66f-1941a925c166
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
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 0x42a7af3b17d0464c12711f5a4f5c07cc6c162ffaa23e3395c0e7b47d0a01eb85. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e111b4dc-4a14-4334-b66f-1941a925c166.json and https://artists.proofprofile.net/proofs/artist/e111b4dc-4a14-4334-b66f-1941a925c166.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
album: Красное небо
  type: MusicAlbum
  date published: 2020-08-26
album: Young Girls
  type: MusicAlbum
  date published: 2020-08-28
album: Ты или ты или он
  type: MusicAlbum
  date published: 2020-08-31
album: Двигай так
  type: MusicAlbum
  date published: 2020-10-05
album: OREO
  type: MusicAlbum
  date published: 2020-11-18
album: Эрон-Дон-Дон
  type: MusicAlbum
  date published: 2020-12-23
album: Хардбасс XXI
  type: MusicAlbum
  date published: 2021-02-10
  track: Хардбасс XXI
    type: MusicRecording
    duration: PT1M47S
    duration ms: 107250
    explicit: false
    by artist: RULER
    in album: Хардбасс XXI
      type: MusicAlbum
      date published: 2021-02-10
    isrc code: QM4TW2154587
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T14:49:19+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xda61598116a32ba97445c6917edee0d9d721e159a80b24d4382789a43787956a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956576
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956576
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2154587
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T02:06:47Z
    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 0xda61598116a32ba97445c6917edee0d9d721e159a80b24d4382789a43787956a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM4TW2154587.
      date published: 2026-07-04T02:06:47Z
    audio: Хардбасс XXI
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.008
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.702
      additional property: Energy
        type: PropertyValue
        value: 0.897
      additional property: Speechiness
        type: PropertyValue
        value: 0.067
      additional property: Acousticness
        type: PropertyValue
        value: 0.033
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.496
      additional property: Liveness
        type: PropertyValue
        value: 0.076
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.888
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.289
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Хардбасс XXI
  type: MusicAlbum
  date published: 2021-02-10
album: Крыша едет Бом-Бом
  type: MusicAlbum
  date published: 2021-03-11
album: Танцы Бравлеров
  type: MusicAlbum
  date published: 2021-04-14
album: БРАВЛБОЛ
  type: MusicAlbum
  date published: 2021-04-23
album: Лентяй
  type: MusicAlbum
  date published: 2021-05-21
album: Pop It
  type: MusicAlbum
  date published: 2021-05-28
album: Танцуй
  type: MusicAlbum
  date published: 2021-07-28
album: Мир грустит
  type: MusicAlbum
  date published: 2021-11-18