Катя Филипова
type: MusicGroup
popularity: 4
followers: 242
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7125e3ce858f9af3684667e735f030c2dfee1f1695746e0b0fe241fc1392eb4a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954623
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954623
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cb7ed5b8-fb8e-43c7-8028-11a3481ff15f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cb7ed5b8-fb8e-43c7-8028-11a3481ff15f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cb7ed5b8-fb8e-43c7-8028-11a3481ff15f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:40:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7125e3ce858f9af3684667e735f030c2dfee1f1695746e0b0fe241fc1392eb4a","name":"Катя Филипова","registered_at":"2026-06-20T23:07:00Z","symbol":"NIM1744099","token_address":"0xb358101e4e3722f1e68463e9543722f75567279d","type":"artist","uuid":"cb7ed5b8-fb8e-43c7-8028-11a3481ff15f"}
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 0x7125e3ce858f9af3684667e735f030c2dfee1f1695746e0b0fe241fc1392eb4a. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb7ed5b8-fb8e-43c7-8028-11a3481ff15f.json and https://artists.proofprofile.net/proofs/artist/cb7ed5b8-fb8e-43c7-8028-11a3481ff15f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:40:06Z
  text: {"copyright_id":"0x7125e3ce858f9af3684667e735f030c2dfee1f1695746e0b0fe241fc1392eb4a","name":"Катя Филипова","registered_at":"2026-06-20T23:07:00Z","symbol":"NIM1744099","token_address":"0xb358101e4e3722f1e68463e9543722f75567279d","type":"artist","uuid":"cb7ed5b8-fb8e-43c7-8028-11a3481ff15f"}
album: Отплуване
  type: MusicAlbum
  date published: 1975-03-31
album: Катя Филипова
  type: MusicAlbum
  date published: 1975-04-17
album: Катя Филипова
  type: MusicAlbum
  date published: 1975-05-28
album: Звезда без име
  type: MusicAlbum
  date published: 1976-02-12
album: Катя Филипова
  type: MusicAlbum
  date published: 1977-04-07
album: Нашият валс
  type: MusicAlbum
  date published: 1977-04-07
album: Незабрава
  type: MusicAlbum
  date published: 1980-07-28
album: Незабрава
  type: MusicAlbum
  date published: 1981-02-02
album: Добри познати. Катя Филипова
  type: MusicAlbum
  date published: 1984-09-20
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  type: MusicAlbum
  date published: 1989-11-09
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  type: MusicAlbum
  date published: 1995-11-15