Circus' End
type: MusicGroup
genre: mexican indie
genre: shoegaze
popularity: 8
followers: 847
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8c3fa03b42872e45532674942ad72fc19ea60e642a4e263d03e5d1f5f90f9ad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954580
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954580
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b72db7e5-f4d7-46af-b8b4-c6132724a458.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b72db7e5-f4d7-46af-b8b4-c6132724a458.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b72db7e5-f4d7-46af-b8b4-c6132724a458
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T17:48:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe8c3fa03b42872e45532674942ad72fc19ea60e642a4e263d03e5d1f5f90f9ad","name":"Circus' End","registered_at":"2026-06-20T15:07:17Z","symbol":"NIM1637838","token_address":"0x0d9378a2eb9748fad95e95feed7ae909139a6475","type":"artist","uuid":"b72db7e5-f4d7-46af-b8b4-c6132724a458"}
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 0xe8c3fa03b42872e45532674942ad72fc19ea60e642a4e263d03e5d1f5f90f9ad. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b72db7e5-f4d7-46af-b8b4-c6132724a458.json and https://artists.proofprofile.net/proofs/artist/b72db7e5-f4d7-46af-b8b4-c6132724a458.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T17:48:00Z
  text: {"copyright_id":"0xe8c3fa03b42872e45532674942ad72fc19ea60e642a4e263d03e5d1f5f90f9ad","name":"Circus' End","registered_at":"2026-06-20T15:07:17Z","symbol":"NIM1637838","token_address":"0x0d9378a2eb9748fad95e95feed7ae909139a6475","type":"artist","uuid":"b72db7e5-f4d7-46af-b8b4-c6132724a458"}
album: The Life and Death of a Sakura Tree
  type: MusicAlbum
  date published: 2021-10-31
album: Osaki
  type: MusicAlbum
  date published: 2022-12-10
album: Carrie
  type: MusicAlbum
  date published: 2023-02-11
album: Daughters
  type: MusicAlbum
  date published: 2023-11-11
album: Billy el Niño
  type: MusicAlbum
  date published: 2024-04-22
album: Aquí
  type: MusicAlbum
  date published: 2024-12-13
album: En Sueño
  type: MusicAlbum
  date published: 2025-01-28
  track: Búhos
    type: MusicRecording
    duration: PT3M1S
    duration ms: 181241
    explicit: false
    by artist: Circus' End
    in album: En Sueño
      type: MusicAlbum
      date published: 2025-01-28
    genre: mexican indie
    genre: shoegaze
    isrc code: QZFZ72590239
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T05:13:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xaf828ed73c1cd2e2f7e8453ee714fd4b623fe0f8560e5de09eabc2f514eb2c3b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959100
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959100
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72590239
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T05:29:55Z
    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 0xaf828ed73c1cd2e2f7e8453ee714fd4b623fe0f8560e5de09eabc2f514eb2c3b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZFZ72590239.
      date published: 2026-07-22T05:29:55Z
    audio: Búhos
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.74
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.329
      additional property: Energy
        type: PropertyValue
        value: 0.513
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.035
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.919
      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.214
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.469
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major