Stefano Ratchev
type: MusicGroup
popularity: 3
followers: 29
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x51ab36204333c19725a255a1f2d71740cd1064e2b4c881510d4cb3173295dcbf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954055
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954055
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43b7427d-9923-42fc-aae1-8170fd9541ba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43b7427d-9923-42fc-aae1-8170fd9541ba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/43b7427d-9923-42fc-aae1-8170fd9541ba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T05:51:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x51ab36204333c19725a255a1f2d71740cd1064e2b4c881510d4cb3173295dcbf","name":"Stefano Ratchev","registered_at":"2026-06-16T13:10:08Z","symbol":"NIM1062006","token_address":"0x268ab7c8ae1f4168d6db4b1859c0f5eb0770cf93","type":"artist","uuid":"43b7427d-9923-42fc-aae1-8170fd9541ba"}
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 0x51ab36204333c19725a255a1f2d71740cd1064e2b4c881510d4cb3173295dcbf. Chain 2 (Bitcoin): anchored in block 954055 (2026-06-17T05:51:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43b7427d-9923-42fc-aae1-8170fd9541ba.json and https://artists.proofprofile.net/proofs/artist/43b7427d-9923-42fc-aae1-8170fd9541ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T05:51:24Z
  text: {"copyright_id":"0x51ab36204333c19725a255a1f2d71740cd1064e2b4c881510d4cb3173295dcbf","name":"Stefano Ratchev","registered_at":"2026-06-16T13:10:08Z","symbol":"NIM1062006","token_address":"0x268ab7c8ae1f4168d6db4b1859c0f5eb0770cf93","type":"artist","uuid":"43b7427d-9923-42fc-aae1-8170fd9541ba"}
album: Gianni e le donne (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 2011-03-08
album: Gianni e le donne
  type: MusicAlbum
  date published: 2011-03-08
album: La foresta di ghiaccio
  type: MusicAlbum
  date published: 2014-10-23
album: La foresta di ghiaccio (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 2014-10-23
track: Demone dentro
  type: MusicRecording
  duration: PT2M2S
  duration ms: 122133
  explicit: false
  by artist: Vadalà
  by artist: Stefano Ratchev
  in album: Dracula (Musiche Originali dello Spettacolo Teatrale di Sergio Rubini)
    type: MusicAlbum
    date published: 2019-07-07
  isrc code: ITR441900570
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-25T13:40:09+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x113300987f849ddb706a5564cee28fbab8ee3b88c24ea3356cae69985ebaf434
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITR441900570
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 0x113300987f849ddb706a5564cee28fbab8ee3b88c24ea3356cae69985ebaf434. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITR441900570.
    date published: 2026-07-02T03:55:08Z
  audio: Demone dentro
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 101.694
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.18
    additional property: Energy
      type: PropertyValue
      value: 0.029
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.945
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.304
    additional property: Liveness
      type: PropertyValue
      value: 0.08
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.039
    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.04
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major