Maria Matveeva
type: MusicGroup
genre: new age
popularity: 2
followers: 201
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x18193dccd35dfa2041cc67902b37a85355a8778718395d6b1e00f91b2b46ed0d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7dd4afab-49fb-448b-83f4-eb640b6e24d5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7dd4afab-49fb-448b-83f4-eb640b6e24d5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7dd4afab-49fb-448b-83f4-eb640b6e24d5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x18193dccd35dfa2041cc67902b37a85355a8778718395d6b1e00f91b2b46ed0d","name":"Maria Matveeva","registered_at":"2026-06-17T09:32:01Z","symbol":"NIM1353509","token_address":"0x9f35fb46a3364d5d23c233c17f79ec675e3e9e52","type":"artist","uuid":"7dd4afab-49fb-448b-83f4-eb640b6e24d5"}
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 0x18193dccd35dfa2041cc67902b37a85355a8778718395d6b1e00f91b2b46ed0d. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dd4afab-49fb-448b-83f4-eb640b6e24d5.json and https://artists.proofprofile.net/proofs/artist/7dd4afab-49fb-448b-83f4-eb640b6e24d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:41:05Z
  text: {"copyright_id":"0x18193dccd35dfa2041cc67902b37a85355a8778718395d6b1e00f91b2b46ed0d","name":"Maria Matveeva","registered_at":"2026-06-17T09:32:01Z","symbol":"NIM1353509","token_address":"0x9f35fb46a3364d5d23c233c17f79ec675e3e9e52","type":"artist","uuid":"7dd4afab-49fb-448b-83f4-eb640b6e24d5"}
album: Princess of Ukok (feat. Eric Mouquet)
  type: MusicAlbum
  date published: 2018-03-19
album: Принцесса укок
  type: MusicAlbum
  date published: 2018-03-23
album: Princess of Ukok
  type: MusicAlbum
  date published: 2018-03-23
album: Two
  type: MusicAlbum
  date published: 2018-04-22
album: Двое
  type: MusicAlbum
  date published: 2018-05-04
album: Smile
  type: MusicAlbum
  date published: 2018-10-25
album: Kalinushka (Remix)
  type: MusicAlbum
  date published: 2020-01-21
album: On the Edge
  type: MusicAlbum
  date published: 2020-03-15
album: Vision
  type: MusicAlbum
  date published: 2021-02-05
album: On the Edge (MAQ Remix)
  type: MusicAlbum
  date published: 2021-03-31