László Szalay
type: MusicGroup
description: thumb|200px|László Szalay, portrait by Bertalan Székely László Szalay de Kéménd (April 18, 1813 – July 17, 1864) was a Hungarian statesman and historian. Szalay was born in Buda. After the completio
popularity: 4
followers: 66
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe81a1d87d02515607d450d90eb824001e435d054efc2ccdd9a84ab6b3b63b7a3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb446bc3-fa2d-4fa5-83f1-bc2cc41c41a5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb446bc3-fa2d-4fa5-83f1-bc2cc41c41a5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/eb446bc3-fa2d-4fa5-83f1-bc2cc41c41a5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe81a1d87d02515607d450d90eb824001e435d054efc2ccdd9a84ab6b3b63b7a3","name":"László Szalay","registered_at":"2026-06-21T10:54:05Z","symbol":"NIM1903662","token_address":"0x911752400ad0463bbef323f4154696ec03d161f6","type":"artist","uuid":"eb446bc3-fa2d-4fa5-83f1-bc2cc41c41a5"}
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 0xe81a1d87d02515607d450d90eb824001e435d054efc2ccdd9a84ab6b3b63b7a3. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb446bc3-fa2d-4fa5-83f1-bc2cc41c41a5.json and https://artists.proofprofile.net/proofs/artist/eb446bc3-fa2d-4fa5-83f1-bc2cc41c41a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xe81a1d87d02515607d450d90eb824001e435d054efc2ccdd9a84ab6b3b63b7a3","name":"László Szalay","registered_at":"2026-06-21T10:54:05Z","symbol":"NIM1903662","token_address":"0x911752400ad0463bbef323f4154696ec03d161f6","type":"artist","uuid":"eb446bc3-fa2d-4fa5-83f1-bc2cc41c41a5"}
album: Akácos Út
  type: MusicAlbum
  date published: 1999-01-01
  track: Akácos Út
    type: MusicRecording
    duration: PT3M29S
    duration ms: 209066
    explicit: false
    by artist: László Szalay
    in album: Akácos Út
      type: MusicAlbum
      date published: 1999-01-01
    isrc code: HUB281206280
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T19:21:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x97395307c8e2266233efa6e8d630697009f3e5fc2eec9c4fe8281b91bcf89708
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958602
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958602
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUB281206280
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T19:28:16Z
    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 0x97395307c8e2266233efa6e8d630697009f3e5fc2eec9c4fe8281b91bcf89708. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/HUB281206280.
      date published: 2026-07-18T19:28:16Z
    audio: Akácos Út
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 142.707
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.252
      additional property: Energy
        type: PropertyValue
        value: 0.228
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.98
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.005
      additional property: Liveness
        type: PropertyValue
        value: 0.194
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.061
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.175
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor