Umbra Sum
type: MusicGroup
popularity: 3
followers: 46
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1ba36c160052737e09de4ce091178ea247ae8e981ddaa674e06f5d3cd6eaaf49
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/b5df74a8-ee52-4f7d-8adf-827576ede579.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b5df74a8-ee52-4f7d-8adf-827576ede579.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b5df74a8-ee52-4f7d-8adf-827576ede579
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1ba36c160052737e09de4ce091178ea247ae8e981ddaa674e06f5d3cd6eaaf49","name":"Umbra Sum","registered_at":"2026-06-20T14:46:04Z","symbol":"NIM1634767","token_address":"0x201acfdcc8bacb0fe0175e6948aa9e6511e9ebee","type":"artist","uuid":"b5df74a8-ee52-4f7d-8adf-827576ede579"}
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 0x1ba36c160052737e09de4ce091178ea247ae8e981ddaa674e06f5d3cd6eaaf49. 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/b5df74a8-ee52-4f7d-8adf-827576ede579.json and https://artists.proofprofile.net/proofs/artist/b5df74a8-ee52-4f7d-8adf-827576ede579.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x1ba36c160052737e09de4ce091178ea247ae8e981ddaa674e06f5d3cd6eaaf49","name":"Umbra Sum","registered_at":"2026-06-20T14:46:04Z","symbol":"NIM1634767","token_address":"0x201acfdcc8bacb0fe0175e6948aa9e6511e9ebee","type":"artist","uuid":"b5df74a8-ee52-4f7d-8adf-827576ede579"}
album: Aún No Has Demostrado Nada
  type: MusicAlbum
  date published: 2014-03-11
  track: Que el Verano Nos Perdone
    type: MusicRecording
    duration: PT3M58S
    duration ms: 238061
    explicit: false
    by artist: Umbra Sum
    in album: Aún No Has Demostrado Nada
      type: MusicAlbum
      date published: 2014-03-11
    isrc code: ES7121300010
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T23:43:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xda042a61667d75ba32bdc65cdfe99911faf14cf287574ee04f44ffa30370f866
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958468
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958468
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7121300010
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T00:27:51Z
    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 0xda042a61667d75ba32bdc65cdfe99911faf14cf287574ee04f44ffa30370f866. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ES7121300010.
      date published: 2026-07-18T00:27:51Z
    audio: Que el Verano Nos Perdone
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.015
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.483
      additional property: Energy
        type: PropertyValue
        value: 0.895
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.216
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.951
      additional property: Liveness
        type: PropertyValue
        value: 0.328
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.498
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.922
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major