Erwin Weerstra
type: MusicGroup
popularity: 2
followers: 61
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x482b729b75f6cc8fed4842ec02443771f0456d90963eb23c4f2bb5e5de1df5e9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d09b5859-dcf1-4391-9e6c-e6687d40e9f9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d09b5859-dcf1-4391-9e6c-e6687d40e9f9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d09b5859-dcf1-4391-9e6c-e6687d40e9f9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x482b729b75f6cc8fed4842ec02443771f0456d90963eb23c4f2bb5e5de1df5e9","name":"Erwin Weerstra","registered_at":"2026-06-21T01:06:20Z","symbol":"NIM1768676","token_address":"0x3394868be12ca35b06227d62b4d1a5532a6eb52e","type":"artist","uuid":"d09b5859-dcf1-4391-9e6c-e6687d40e9f9"}
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 0x482b729b75f6cc8fed4842ec02443771f0456d90963eb23c4f2bb5e5de1df5e9. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d09b5859-dcf1-4391-9e6c-e6687d40e9f9.json and https://artists.proofprofile.net/proofs/artist/d09b5859-dcf1-4391-9e6c-e6687d40e9f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x482b729b75f6cc8fed4842ec02443771f0456d90963eb23c4f2bb5e5de1df5e9","name":"Erwin Weerstra","registered_at":"2026-06-21T01:06:20Z","symbol":"NIM1768676","token_address":"0x3394868be12ca35b06227d62b4d1a5532a6eb52e","type":"artist","uuid":"d09b5859-dcf1-4391-9e6c-e6687d40e9f9"}
album: Glass
  type: MusicAlbum
  date published: 2021-03-13
album: Mozart: Fantasia in D Minor, K. 397
  type: MusicAlbum
  date published: 2022-06-10
album: Chopin: Nocturne in E-Flat Major, Op. 9 No. 2
  type: MusicAlbum
  date published: 2022-06-11
album: Mozart: Rondo in D Major, K. 485
  type: MusicAlbum
  date published: 2022-06-11
album: Grieg: Nocturne Op. 54 No. 4
  type: MusicAlbum
  date published: 2022-09-04
album: Debussy: Arabesque, L. 66: No. 1, Andantino con moto
  type: MusicAlbum
  date published: 2022-09-04
album: Manuel de Falla: Ritual Fire Dance
  type: MusicAlbum
  date published: 2022-09-05
album: Bach: French Suite No. 2 in C Minor, BWV 813
  type: MusicAlbum
  date published: 2022-09-05
album: Chopin: Souvenir De Paganini
  type: MusicAlbum
  date published: 2022-11-26
album: Sweelinck: Paduana Lachrymae
  type: MusicAlbum
  date published: 2022-12-06
album: Glass: Solo Piano
  type: MusicAlbum
  date published: 2023-01-01
album: In a Landscape
  type: MusicAlbum
  date published: 2023-02-01
album: Sheep May Safely Graze (Arr. for Piano by Egon Petri)
  type: MusicAlbum
  date published: 2023-02-21
album: Carroll: Sea Idylls
  type: MusicAlbum
  date published: 2023-03-01
album: Rameau: La Joyeuse
  type: MusicAlbum
  date published: 2023-03-05
album: Contemporary Piano Solo
  type: MusicAlbum
  date published: 2023-08-22
album: Für Alina
  type: MusicAlbum
  date published: 2024-02-25
album: Bach/Siloti: Prelude in B Minor
  type: MusicAlbum
  date published: 2024-02-29
album: Rautavaara: Ikonit
  type: MusicAlbum
  date published: 2024-02-29
album: Gjeilo: Dawn
  type: MusicAlbum
  date published: 2024-03-03