Χι Έψιλον
type: MusicGroup
popularity: 4
followers: 57
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x39ab6d778b42490daeee8ecdfc22fb26cfe9ecaef41a02dd89e15531d2a6d696
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cefba86e-f28e-49f0-8c6d-19becc0f7a53.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cefba86e-f28e-49f0-8c6d-19becc0f7a53.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cefba86e-f28e-49f0-8c6d-19becc0f7a53
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x39ab6d778b42490daeee8ecdfc22fb26cfe9ecaef41a02dd89e15531d2a6d696","name":"Χι Έψιλον","registered_at":"2026-06-21T00:32:50Z","symbol":"NIM1760662","token_address":"0x23d5b2057b8521fbfaa4807cc9dd9c7fb2d98f85","type":"artist","uuid":"cefba86e-f28e-49f0-8c6d-19becc0f7a53"}
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 0x39ab6d778b42490daeee8ecdfc22fb26cfe9ecaef41a02dd89e15531d2a6d696. 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/cefba86e-f28e-49f0-8c6d-19becc0f7a53.json and https://artists.proofprofile.net/proofs/artist/cefba86e-f28e-49f0-8c6d-19becc0f7a53.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x39ab6d778b42490daeee8ecdfc22fb26cfe9ecaef41a02dd89e15531d2a6d696","name":"Χι Έψιλον","registered_at":"2026-06-21T00:32:50Z","symbol":"NIM1760662","token_address":"0x23d5b2057b8521fbfaa4807cc9dd9c7fb2d98f85","type":"artist","uuid":"cefba86e-f28e-49f0-8c6d-19becc0f7a53"}
album: Παρένθεση
  type: MusicAlbum
  date published: 2025-07-25
  track: Όνειρο
    type: MusicRecording
    duration: PT3M16S
    duration ms: 196000
    explicit: true
    by artist: Χι Έψιλον
    in album: Παρένθεση
      type: MusicAlbum
      date published: 2025-07-25
    isrc code: QZWFK2530809
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T14:59:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2ce6ededb9404305a76647d6be815484f89b60c972578d26447115d50018d0be
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959144
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959144
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFK2530809
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T15:38:35Z
    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 0x2ce6ededb9404305a76647d6be815484f89b60c972578d26447115d50018d0be. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFK2530809 — a six-check JSON result.
      date published: 2026-07-22T15:38:35Z
    audio: Όνειρο
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.958
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.882
      additional property: Energy
        type: PropertyValue
        value: 0.466
      additional property: Speechiness
        type: PropertyValue
        value: 0.294
      additional property: Acousticness
        type: PropertyValue
        value: 0.89
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.137
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.634
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.09
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Μάτ(α)ια
  type: MusicAlbum
  date published: 2025-07-26
album: BEWARE
  type: MusicAlbum
  date published: 2025-09-13
album: ΜΟΙΡΑ
  type: MusicAlbum
  date published: 2025-10-03