Márta Fábián
type: MusicGroup
genre: avant-garde
description: Márta Fábián (born 1946 in Budapest) is a Hungarian cimbalom player and soloist. Early life and education Fábián began playing at the age of 8. Since 1956 she has been a member of the Broadcast Ch
popularity: 2
followers: 34
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3379a1b7b384ecc63c5fd533ee117e47dc78552b2a9a46d6f643f4f549e4e886
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954035
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954035
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3cb471e5-31f7-41d2-956d-ee03d1b39382.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3cb471e5-31f7-41d2-956d-ee03d1b39382.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3cb471e5-31f7-41d2-956d-ee03d1b39382
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T02:39:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3379a1b7b384ecc63c5fd533ee117e47dc78552b2a9a46d6f643f4f549e4e886","name":"Márta Fábián","registered_at":"2026-06-16T10:42:52Z","symbol":"NIM1026886","token_address":"0x8808f9284b9c25deda2759b0800370416defcc21","type":"artist","uuid":"3cb471e5-31f7-41d2-956d-ee03d1b39382"}
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 0x3379a1b7b384ecc63c5fd533ee117e47dc78552b2a9a46d6f643f4f549e4e886. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cb471e5-31f7-41d2-956d-ee03d1b39382.json and https://artists.proofprofile.net/proofs/artist/3cb471e5-31f7-41d2-956d-ee03d1b39382.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T02:39:28Z
  text: {"copyright_id":"0x3379a1b7b384ecc63c5fd533ee117e47dc78552b2a9a46d6f643f4f549e4e886","name":"Márta Fábián","registered_at":"2026-06-16T10:42:52Z","symbol":"NIM1026886","token_address":"0x8808f9284b9c25deda2759b0800370416defcc21","type":"artist","uuid":"3cb471e5-31f7-41d2-956d-ee03d1b39382"}
album: Cimbalom Music
  type: MusicAlbum
  date published: 2014-07-15
album: Cimbalom Music
  type: MusicAlbum
  date published: 2014-07-15
album: Baroque Music for Cimbalom
  type: MusicAlbum
  date published: 2015-02-01
album: Baroque Music for Cimbalom
  type: MusicAlbum
  date published: 2015-02-01