Matthäus Bär
type: MusicGroup
genre: children's music
popularity: 8
followers: 595
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x31687e64fb903ee7804276e11a2deec1e0ca83e0ae57e60aecdf9c752f984391
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954039
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954039
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3ea96496-6c78-4721-a384-95e14b8e9e2b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3ea96496-6c78-4721-a384-95e14b8e9e2b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3ea96496-6c78-4721-a384-95e14b8e9e2b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T03:00:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x31687e64fb903ee7804276e11a2deec1e0ca83e0ae57e60aecdf9c752f984391","name":"Matthäus Bär","registered_at":"2026-06-16T11:22:25Z","symbol":"NIM1036320","token_address":"0xa47579b457b28ef0bb9d7e22a9d1767f141835ad","type":"artist","uuid":"3ea96496-6c78-4721-a384-95e14b8e9e2b"}
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 0x31687e64fb903ee7804276e11a2deec1e0ca83e0ae57e60aecdf9c752f984391. Chain 2 (Bitcoin): anchored in block 954040 (2026-06-17T03:05:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ea96496-6c78-4721-a384-95e14b8e9e2b.json and https://artists.proofprofile.net/proofs/artist/3ea96496-6c78-4721-a384-95e14b8e9e2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T03:05:45Z
  text: {"copyright_id":"0x31687e64fb903ee7804276e11a2deec1e0ca83e0ae57e60aecdf9c752f984391","name":"Matthäus Bär","registered_at":"2026-06-16T11:22:25Z","symbol":"NIM1036320","token_address":"0xa47579b457b28ef0bb9d7e22a9d1767f141835ad","type":"artist","uuid":"3ea96496-6c78-4721-a384-95e14b8e9e2b"}
album: Singt seine großen Kinderlieder
  type: MusicAlbum
  date published: 2013-11-29
album: Stromgitarre, Schlagzeug, Bass
  type: MusicAlbum
  date published: 2015-11-27
album: Stromgitarre, Schlagzeug, Bass
  type: MusicAlbum
  date published: 2015-11-27
album: Nichts für Kinder
  type: MusicAlbum
  date published: 2017-04-07
album: Nichts für Kinder
  type: MusicAlbum
  date published: 2017-04-07
album: Zucker
  type: MusicAlbum
  date published: 2018-11-30
album: Best of Bär
  type: MusicAlbum
  date published: 2021-10-29
album: Drei Wasserschweine brennen durch [Die Wasserschwein-Reihe, Band 1 (Ungekürzte Lesung)]
  type: MusicAlbum
  date published: 2023-05-01
album: Drei Wasserschweine wollen's wissen [Die Wasserschwein-Reihe, Band 2 (Ungekürzte Lesung)]
  type: MusicAlbum
  date published: 2025-04-01