Lycourgos Angelopoulos
type: MusicGroup
genre: gregorian chant
genre: medieval
popularity: 22
followers: 2019
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc044c66c33cf268a1314d3d1452d2e9d4b99b6a165091aa30a0995611844c5ab
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dfdedd45-c56f-48a2-9be7-58a1747fea05.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dfdedd45-c56f-48a2-9be7-58a1747fea05.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dfdedd45-c56f-48a2-9be7-58a1747fea05
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc044c66c33cf268a1314d3d1452d2e9d4b99b6a165091aa30a0995611844c5ab","name":"Lycourgos Angelopoulos","registered_at":"2026-06-12T11:48:39Z","symbol":"NIM0288683","token_address":"0xb5bee8d025b6774d0993bc429593dab7fe311dcd","type":"artist","uuid":"dfdedd45-c56f-48a2-9be7-58a1747fea05"}
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 0xc044c66c33cf268a1314d3d1452d2e9d4b99b6a165091aa30a0995611844c5ab. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfdedd45-c56f-48a2-9be7-58a1747fea05.json and https://artists.proofprofile.net/proofs/artist/dfdedd45-c56f-48a2-9be7-58a1747fea05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0xc044c66c33cf268a1314d3d1452d2e9d4b99b6a165091aa30a0995611844c5ab","name":"Lycourgos Angelopoulos","registered_at":"2026-06-12T11:48:39Z","symbol":"NIM0288683","token_address":"0xb5bee8d025b6774d0993bc429593dab7fe311dcd","type":"artist","uuid":"dfdedd45-c56f-48a2-9be7-58a1747fea05"}
album: Hymnes de Noël
  type: MusicAlbum
  date published: 1993
album: Hymnes à la très Sainte Mère de Dieu - Hymns to the Holy Mother of God
  type: MusicAlbum
  date published: 1995
album: Ioannis Koukouzèlis, Le Maistor Byzantin
  type: MusicAlbum
  date published: 1995
album: Lycourgos Angelopoulos Collector
  type: MusicAlbum
  date published: 2015
  track: Kathisma, Mode 4ème chromatique : Venez fidèle et voyons
    type: MusicRecording
    duration: PT1M33S
    duration ms: 93493
    explicit: false
    by artist: Lycourgos Angelopoulos
    in album: Lycourgos Angelopoulos Collector
      type: MusicAlbum
      date published: 2015
    genre: gregorian chant
    genre: medieval
    isrc code: FRX210610025
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T00:17:44+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0e3afc6b4037c0f720ea1c42dd0cb550812d5089ab58027f2cf71f6614ccf535
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956440
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956440
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX210610025
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T04:03:57Z
    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 0x0e3afc6b4037c0f720ea1c42dd0cb550812d5089ab58027f2cf71f6614ccf535. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX210610025.
      date published: 2026-07-03T04:03:57Z
    audio: Kathisma, Mode 4ème chromatique : Venez fidèle et voyons
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 76.085
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.299
      additional property: Energy
        type: PropertyValue
        value: 0.111
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.986
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.165
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.392
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.274
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Lycourgos Angelopoulos Collector
  type: MusicAlbum
  date published: 2015-02-09
album: Gregorian Chants for Morning Faith and Clear Direction
  type: MusicAlbum
  date published: 2025-11-07
album: Gregorian Chants for Harmony Within and Body Relief
  type: MusicAlbum
  date published: 2025-11-14