Leaving Echoes
type: MusicGroup
popularity: 4
followers: 68
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa30945f4f2b31ad26504034fcd0ec397e17f0f9d69592bd69188fb1b990a2713
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/48b0517b-d58d-49b6-a949-512e70cee07c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/48b0517b-d58d-49b6-a949-512e70cee07c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/48b0517b-d58d-49b6-a949-512e70cee07c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa30945f4f2b31ad26504034fcd0ec397e17f0f9d69592bd69188fb1b990a2713","name":"Leaving Echoes","registered_at":"2026-06-16T14:53:59Z","symbol":"NIM1086787","token_address":"0x73a2821c0e5ed75a4d3e7cf256fef6a2ad7a8e33","type":"artist","uuid":"48b0517b-d58d-49b6-a949-512e70cee07c"}
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 0xa30945f4f2b31ad26504034fcd0ec397e17f0f9d69592bd69188fb1b990a2713. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48b0517b-d58d-49b6-a949-512e70cee07c.json and https://artists.proofprofile.net/proofs/artist/48b0517b-d58d-49b6-a949-512e70cee07c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xa30945f4f2b31ad26504034fcd0ec397e17f0f9d69592bd69188fb1b990a2713","name":"Leaving Echoes","registered_at":"2026-06-16T14:53:59Z","symbol":"NIM1086787","token_address":"0x73a2821c0e5ed75a4d3e7cf256fef6a2ad7a8e33","type":"artist","uuid":"48b0517b-d58d-49b6-a949-512e70cee07c"}
album: The Innocent One
  type: MusicAlbum
  date published: 2021-05-25
album: These Lines
  type: MusicAlbum
  date published: 2021-06-22
album: Daisy
  type: MusicAlbum
  date published: 2021-07-20
album: Jump In
  type: MusicAlbum
  date published: 2021-09-17
album: Obsession
  type: MusicAlbum
  date published: 2021-11-17
album: The Frailty Buried Underneath
  type: MusicAlbum
  date published: 2022-12-23
album: Ten Million Heartbeats
  type: MusicAlbum
  date published: 2023-05-12
  track: Ten Million Heartbeats
    type: MusicRecording
    duration: PT4M23S
    duration ms: 263970
    explicit: true
    by artist: Leaving Echoes
    in album: Ten Million Heartbeats
      type: MusicAlbum
      date published: 2023-05-12
    isrc code: USHM22302391
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T17:45:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x09b72d11e2c70d468ca1a90df95807e0bf8e9b8f3716cba0421135f3420dc746
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956728
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956728
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM22302391
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:43:49Z
    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 0x09b72d11e2c70d468ca1a90df95807e0bf8e9b8f3716cba0421135f3420dc746. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM22302391.
      date published: 2026-07-05T01:43:49Z
    audio: Ten Million Heartbeats
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 89.87
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.402
      additional property: Energy
        type: PropertyValue
        value: 0.831
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.106
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.215
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.842
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Two Truths and a Lie
  type: MusicAlbum
  date published: 2023-06-23
album: Look on Down From the Bridge
  type: MusicAlbum
  date published: 2023-09-29
album: Shiny New Toy
  type: MusicAlbum
  date published: 2023-11-17