Caelus
type: MusicGroup
genre: neoclassical
genre: symphonic metal
description: thumb|upright|Mithraic altar (3rd-century AD) showing Caelus flanked by allegories of the Seasons (Museum Carnuntinum, Lower Austria) Caelus or Coelus (; ) was a primordial god of the sky in Roman my
popularity: 5
followers: 301
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
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additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/df6e307f-dc80-4baa-be6b-17768d420841.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/df6e307f-dc80-4baa-be6b-17768d420841
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
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 0x5f23ec3d7549289491dfc80e09969b90771ed099cd8a6d37f246201305f5665a. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df6e307f-dc80-4baa-be6b-17768d420841.json and https://artists.proofprofile.net/proofs/artist/df6e307f-dc80-4baa-be6b-17768d420841.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
album: Start All over Again
  type: MusicAlbum
  date published: 2014-04-15
album: Start All Over Again
  type: MusicAlbum
  date published: 2014-04-15
album: Lament
  type: MusicAlbum
  date published: 2018-02-20
  track: Lacrimosa - Adapted from Mozart Requiem in D Minor
    type: MusicRecording
    duration: PT3M25S
    duration ms: 205586
    explicit: false
    by artist: Caelus
    in album: Lament
      type: MusicAlbum
      date published: 2018-02-20
    genre: neoclassical
    genre: symphonic metal
    isrc code: QMDA61844030
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA61844030
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T20:12:32Z
    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 0x81a508e07c181d2e9c1de3184e01a7882568217e9cd894de4400d32869ef6c07. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QMDA61844030.
      date published: 2026-07-16T20:12:32Z
    audio: Lacrimosa - Adapted from Mozart Requiem in D Minor
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.996
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.315
      additional property: Energy
        type: PropertyValue
        value: 0.935
      additional property: Speechiness
        type: PropertyValue
        value: 0.077
      additional property: Acousticness
        type: PropertyValue
        value: 0.008
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.005
      additional property: Liveness
        type: PropertyValue
        value: 0.121
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.059
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.72
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Epitaph
  type: MusicAlbum
  date published: 2022-01-18
album: The Light from Outer Space
  type: MusicAlbum
  date published: 2022-03-23
album: Symbols of Afterglow
  type: MusicAlbum
  date published: 2022-04-27
album: The Voyager, Pt. 1
  type: MusicAlbum
  date published: 2022-05-17