Echoes Left Behind
type: MusicGroup
genre: slowcore
popularity: 6
followers: 231
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x10ac8b24e5ea3b3607dbefd68afcfc8cea8108979253ca67be894118b4824a8f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bbe8a664-12af-4825-9a7f-45d4a27f7859.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bbe8a664-12af-4825-9a7f-45d4a27f7859.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bbe8a664-12af-4825-9a7f-45d4a27f7859
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x10ac8b24e5ea3b3607dbefd68afcfc8cea8108979253ca67be894118b4824a8f","name":"Echoes Left Behind","registered_at":"2026-06-20T17:15:08Z","symbol":"NIM1665072","token_address":"0x18877657e37d7e2a7e444d2f4f98ab5ef6e582c9","type":"artist","uuid":"bbe8a664-12af-4825-9a7f-45d4a27f7859"}
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 0x10ac8b24e5ea3b3607dbefd68afcfc8cea8108979253ca67be894118b4824a8f. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbe8a664-12af-4825-9a7f-45d4a27f7859.json and https://artists.proofprofile.net/proofs/artist/bbe8a664-12af-4825-9a7f-45d4a27f7859.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
  text: {"copyright_id":"0x10ac8b24e5ea3b3607dbefd68afcfc8cea8108979253ca67be894118b4824a8f","name":"Echoes Left Behind","registered_at":"2026-06-20T17:15:08Z","symbol":"NIM1665072","token_address":"0x18877657e37d7e2a7e444d2f4f98ab5ef6e582c9","type":"artist","uuid":"bbe8a664-12af-4825-9a7f-45d4a27f7859"}
album: Interlinked (remastered)
  type: MusicAlbum
  date published: 2024-02-28
album: Forgotten Voicemails
  type: MusicAlbum
  date published: 2024-10-13
  track: Where It All Went Wrong
    type: MusicRecording
    duration: PT1M55S
    duration ms: 115711
    explicit: false
    by artist: Echoes Left Behind
    in album: Forgotten Voicemails
      type: MusicAlbum
      date published: 2024-10-13
    genre: slowcore
    isrc code: QZWFQ2420436
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T03:50:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5f9389ce195d270141ef692625b88b94f5bf400c9422473153098a310d363973
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958963
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958963
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2420436
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T04:02:02Z
    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 0x5f9389ce195d270141ef692625b88b94f5bf400c9422473153098a310d363973. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZWFQ2420436.
      date published: 2026-07-21T04:02:02Z
    audio: Where It All Went Wrong
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 176.915
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.076
      additional property: Energy
        type: PropertyValue
        value: 0.006
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.98
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.77
      additional property: Liveness
        type: PropertyValue
        value: 0.103
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.037
      additional property: Loudness (dB)
        type: PropertyValue
        value: -35.51
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Quiet storm
  type: MusicAlbum
  date published: 2024-12-22
album: Interlinked
  type: MusicAlbum
  date published: 2025-02-28
album: I Miss You
  type: MusicAlbum
  date published: 2025-04-24
album: Songs I wrote in a mental hospital
  type: MusicAlbum
  date published: 2025-07-03