Olga Morozova
type: MusicGroup
description: Olga Vasilyevna Morozova (; born 22 February 1949) is a Russian former professional tennis player. Competing for the Soviet Union, she was the runner-up in women's singles at the 1974 French Open and
popularity: 5
followers: 121
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953947
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additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/2279d4f3-e3a0-464e-957d-7d3a4a6e3558.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2279d4f3-e3a0-464e-957d-7d3a4a6e3558
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6eea6e72e4184e0c564cef55309699ca9674c9cf93a56c20b3c1e5abc6448e0. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2279d4f3-e3a0-464e-957d-7d3a4a6e3558.json and https://artists.proofprofile.net/proofs/artist/2279d4f3-e3a0-464e-957d-7d3a4a6e3558.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:14:26Z
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album: Passaggio
  type: MusicAlbum
  date published: 2020-08-01
album: Sweet Dreams
  type: MusicAlbum
  date published: 2020-10-04
album: Jazzy Christmas
  type: MusicAlbum
  date published: 2020-12-13
album: Spring
  type: MusicAlbum
  date published: 2022-03-06
album: Two of us
  type: MusicAlbum
  date published: 2022-04-19
  track: Two of us
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    duration: PT4M30S
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    by artist: Olga Morozova
    in album: Two of us
      type: MusicAlbum
      date published: 2022-04-19
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    additional property: OTSVerificationAPI
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      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62211290
    additional property: OTSTimestamp
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    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0702ff79b59b16b33d18e55689a5dc2bb1842587a5cbd0bb9649efeb24511d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHN62211290.
      date published: 2026-07-18T11:58:44Z
    audio: Two of us
      type: AudioObject
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      additional property: Danceability
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Liveness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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      additional property: Key Name
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      additional property: Mode Name
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