Екатерина Румянцева
type: MusicGroup
popularity: 3
followers: 44
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xebdcc0678ef9868868a4a956b762ea0ccffb1d49db53c3cf0e10301fb3542614
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/83fb9d85-2f78-479b-80e1-b8514dfd7b98.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/83fb9d85-2f78-479b-80e1-b8514dfd7b98.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/83fb9d85-2f78-479b-80e1-b8514dfd7b98
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xebdcc0678ef9868868a4a956b762ea0ccffb1d49db53c3cf0e10301fb3542614","name":"Екатерина Румянцева","registered_at":"2026-06-17T11:37:56Z","symbol":"NIM1383528","token_address":"0x02eb57adb384eace08096b8b17d2c03beb074e4c","type":"artist","uuid":"83fb9d85-2f78-479b-80e1-b8514dfd7b98"}
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 0xebdcc0678ef9868868a4a956b762ea0ccffb1d49db53c3cf0e10301fb3542614. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83fb9d85-2f78-479b-80e1-b8514dfd7b98.json and https://artists.proofprofile.net/proofs/artist/83fb9d85-2f78-479b-80e1-b8514dfd7b98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xebdcc0678ef9868868a4a956b762ea0ccffb1d49db53c3cf0e10301fb3542614","name":"Екатерина Румянцева","registered_at":"2026-06-17T11:37:56Z","symbol":"NIM1383528","token_address":"0x02eb57adb384eace08096b8b17d2c03beb074e4c","type":"artist","uuid":"83fb9d85-2f78-479b-80e1-b8514dfd7b98"}
album: Спи младенец
  type: MusicAlbum
  date published: 2024-08-07
album: Раньше
  type: MusicAlbum
  date published: 2024-09-03
  track: Раньше
    type: MusicRecording
    duration: PT3M53S
    duration ms: 233125
    explicit: false
    by artist: Екатерина Румянцева
    in album: Раньше
      type: MusicAlbum
      date published: 2024-09-03
    isrc code: SE6QE2440841
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T22:52:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x340ada1e240468a97aab9465949614864788c4ef790f31a8fd2f299ef393733f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958793
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958793
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6QE2440841
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T01:55:05Z
    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 0x340ada1e240468a97aab9465949614864788c4ef790f31a8fd2f299ef393733f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:05Z), 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/SE6QE2440841.
      date published: 2026-07-20T01:55:05Z
    audio: Раньше
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 101.841
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.378
      additional property: Energy
        type: PropertyValue
        value: 0.233
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.952
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.125
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.271
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.914
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor