Blue Hour
type: MusicGroup
description: thumb|Blue hour at the Old Cathedral of the Holy Name of Jesus, Bragança in Portugal The blue hour (from French ; ) is the period of twilight (in the morning or evening, around the nautical stage) whe
popularity: 5
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x354dea5e097dd00cc1882bcb2635e281f95a995178867c424e03693cc4bcc02a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8965a074-3534-41b2-955e-1503c1eb2ee6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8965a074-3534-41b2-955e-1503c1eb2ee6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8965a074-3534-41b2-955e-1503c1eb2ee6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x354dea5e097dd00cc1882bcb2635e281f95a995178867c424e03693cc4bcc02a","name":"Blue Hour","registered_at":"2026-06-17T13:36:22Z","symbol":"NIM1411705","token_address":"0x0525c1cdc54be096d38dc6f9b66aa092a988621b","type":"artist","uuid":"8965a074-3534-41b2-955e-1503c1eb2ee6"}
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 0x354dea5e097dd00cc1882bcb2635e281f95a995178867c424e03693cc4bcc02a. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8965a074-3534-41b2-955e-1503c1eb2ee6.json and https://artists.proofprofile.net/proofs/artist/8965a074-3534-41b2-955e-1503c1eb2ee6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x354dea5e097dd00cc1882bcb2635e281f95a995178867c424e03693cc4bcc02a","name":"Blue Hour","registered_at":"2026-06-17T13:36:22Z","symbol":"NIM1411705","token_address":"0x0525c1cdc54be096d38dc6f9b66aa092a988621b","type":"artist","uuid":"8965a074-3534-41b2-955e-1503c1eb2ee6"}
album: Echoing Dusk
  type: MusicAlbum
  date published: 2025-03-28
album: Crimson Dusk
  type: MusicAlbum
  date published: 2025-03-28
album: Drifting Pathways
  type: MusicAlbum
  date published: 2025-03-28
album: Crimson Skyline
  type: MusicAlbum
  date published: 2025-03-28
  track: Crimson Skyline
    type: MusicRecording
    duration: PT2M7S
    duration ms: 127802
    explicit: false
    by artist: Blue Hour
    in album: Crimson Skyline
      type: MusicAlbum
      date published: 2025-03-28
    isrc code: DEZN82499056
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
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    additional property: CopyrightChainExplorerURL
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957770
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZN82499056
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T23:17:00Z
    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 0xf1da3968619c55e53bb4ed122f1a6c37cf62e6fc835322c085e07c9fb604b78e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEZN82499056.
      date published: 2026-07-12T23:17:00Z
    audio: Crimson Skyline
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 164.67
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.418
      additional property: Energy
        type: PropertyValue
        value: 0.264
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0.829
      additional property: Liveness
        type: PropertyValue
        value: 0.087
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.458
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.566
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major