EchoXU
type: MusicGroup
popularity: 3
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9eb651d59efd8c85b4f72d150335341c8e03d6afb80940f271185446bc2a765c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ebc7cd3-9cbf-4920-bbf3-19141f3a3658.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ebc7cd3-9cbf-4920-bbf3-19141f3a3658.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9ebc7cd3-9cbf-4920-bbf3-19141f3a3658
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
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 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 0x9eb651d59efd8c85b4f72d150335341c8e03d6afb80940f271185446bc2a765c. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ebc7cd3-9cbf-4920-bbf3-19141f3a3658.json and https://artists.proofprofile.net/proofs/artist/9ebc7cd3-9cbf-4920-bbf3-19141f3a3658.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
album: 情けない | 沒出息
  type: MusicAlbum
  date published: 2025-10-13
  track: 情けない | 沒出息
    type: MusicRecording
    duration: PT4M28S
    duration ms: 268800
    explicit: false
    by artist: EchoXU
    in album: 情けない | 沒出息
      type: MusicAlbum
      date published: 2025-10-13
    isrc code: QT3FD2532529
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T06:13:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x61655f1259a8276cc66c89168199224485bbc0f715cb7eee53b158e4dfeb943a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958838
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958838
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3FD2532529
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T07:01:21Z
    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 0x61655f1259a8276cc66c89168199224485bbc0f715cb7eee53b158e4dfeb943a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QT3FD2532529.
      date published: 2026-07-20T07:01:21Z
    audio: 情けない | 沒出息
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 147.991
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.559
      additional property: Energy
        type: PropertyValue
        value: 0.516
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.068
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.121
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.251
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.389
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 終焉の先にある空
  type: MusicAlbum
  date published: 2025-10-13
album: ELECTRIC HEART
  type: MusicAlbum
  date published: 2025-10-15
album: AFTERGLOW
  type: MusicAlbum
  date published: 2025-10-16
album: Blooming Summer
  type: MusicAlbum
  date published: 2025-10-17
album: 古意
  type: MusicAlbum
  date published: 2025-10-18
album: 他們都說愛她
  type: MusicAlbum
  date published: 2025-10-20
album: Descent
  type: MusicAlbum
  date published: 2025-10-20
album: 沉默的愛
  type: MusicAlbum
  date published: 2025-10-20
album: 征戰
  type: MusicAlbum
  date published: 2025-10-20
album: 選ばれなかった歌 2
  type: MusicAlbum
  date published: 2025-10-20
album: 選ばれなかった歌 1
  type: MusicAlbum
  date published: 2025-10-20
album: 古 | 新
  type: MusicAlbum
  date published: 2025-10-21
album: 古 | 戀
  type: MusicAlbum
  date published: 2025-10-23
album: 古 | 亂
  type: MusicAlbum
  date published: 2025-10-23
album: 古 | 歸
  type: MusicAlbum
  date published: 2025-10-25