Martin Zagrajsek
type: MusicGroup
popularity: 10
followers: 1039
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x81548650a28528deb3da9eacbbc38224f30b7e33dd6ee2649136bd0f74c99950
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/720c9020-06d2-4e8c-9803-f1a22d025a7b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/720c9020-06d2-4e8c-9803-f1a22d025a7b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/720c9020-06d2-4e8c-9803-f1a22d025a7b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x81548650a28528deb3da9eacbbc38224f30b7e33dd6ee2649136bd0f74c99950","name":"Martin Zagrajsek","registered_at":"2026-06-17T05:26:02Z","symbol":"NIM1294870","token_address":"0x0557dd45771ebf18478d748eb32aa5d86ad73a41","type":"artist","uuid":"720c9020-06d2-4e8c-9803-f1a22d025a7b"}
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 0x81548650a28528deb3da9eacbbc38224f30b7e33dd6ee2649136bd0f74c99950. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/720c9020-06d2-4e8c-9803-f1a22d025a7b.json and https://artists.proofprofile.net/proofs/artist/720c9020-06d2-4e8c-9803-f1a22d025a7b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x81548650a28528deb3da9eacbbc38224f30b7e33dd6ee2649136bd0f74c99950","name":"Martin Zagrajsek","registered_at":"2026-06-17T05:26:02Z","symbol":"NIM1294870","token_address":"0x0557dd45771ebf18478d748eb32aa5d86ad73a41","type":"artist","uuid":"720c9020-06d2-4e8c-9803-f1a22d025a7b"}
album: Romantic Clarinets
  type: MusicAlbum
  date published: 2008-02-20
  track: Mystic Lover
    type: MusicRecording
    duration: PT3M51S
    duration ms: 231186
    explicit: false
    by artist: Martin Zagrajsek
    in album: Romantic Clarinets
      type: MusicAlbum
      date published: 2008-02-20
    isrc code: ATT250802040
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T12:20:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3d1cf9db04433d5546c36ba6a4880e61d856c51f5743a20ce198b3802d171618
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958601
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958601
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATT250802040
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T19:27:02Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1cf9db04433d5546c36ba6a4880e61d856c51f5743a20ce198b3802d171618. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ATT250802040.
      date published: 2026-07-18T19:27:02Z
    audio: Mystic Lover
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.975
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.688
      additional property: Energy
        type: PropertyValue
        value: 0.557
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.282
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.344
      additional property: Liveness
        type: PropertyValue
        value: 0.08
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.834
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.569
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Mar Y Sol
    type: MusicRecording
    duration: PT2M56S
    duration ms: 176920
    explicit: false
    by artist: Martin Zagrajsek
    in album: Romantic Clarinets
      type: MusicAlbum
      date published: 2008-02-20
    isrc code: ATT250802050
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T18:43:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2515501e517bf99587f650cb451d77a6b1409dce2ad9045cdb6dde4964806998
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956576
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956576
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATT250802050
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T02:06:47Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2515501e517bf99587f650cb451d77a6b1409dce2ad9045cdb6dde4964806998. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ATT250802050.
      date published: 2026-07-04T02:06:47Z
    audio: Mar Y Sol
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 98.098
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.607
      additional property: Energy
        type: PropertyValue
        value: 0.799
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.173
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.897
      additional property: Liveness
        type: PropertyValue
        value: 0.377
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.879
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.575
      additional property: Key Name
      additional property: Mode Name
album: Welthits
album: Stimmungsvolle Weihnacht - Saxophon
album: extra vergine

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Major

Welthits
type: MusicAlbum
date published: 2013-01-11

Stimmungsvolle Weihnacht - Saxophon
type: MusicAlbum
date published: 2013-10-15

extra vergine
type: MusicAlbum
date published: 2015-11-01