Alexander Grychtolik
type: MusicGroup
description: Alexander Ferdinand Grychtolik (born 6 September 1980 in Berlin) is a German harpsichordist, improviser, musicologist and academic. Grychtolik is married to the harpsichordist Aleksandra Magdalena Gr
popularity: 7
followers: 345
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf69269935a5f96b2f1a94237953866f013627671b331cfce4f67f8fcd9d876a4
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/6b2508ff-c567-4492-bad0-1cc766103a72.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6b2508ff-c567-4492-bad0-1cc766103a72.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6b2508ff-c567-4492-bad0-1cc766103a72
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf69269935a5f96b2f1a94237953866f013627671b331cfce4f67f8fcd9d876a4","name":"Alexander Grychtolik","registered_at":"2026-06-17T02:52:04Z","symbol":"NIM1258115","token_address":"0xcf03ceae821cead23970000e8258a52516515e34","type":"artist","uuid":"6b2508ff-c567-4492-bad0-1cc766103a72"}
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 0xf69269935a5f96b2f1a94237953866f013627671b331cfce4f67f8fcd9d876a4. 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/6b2508ff-c567-4492-bad0-1cc766103a72.json and https://artists.proofprofile.net/proofs/artist/6b2508ff-c567-4492-bad0-1cc766103a72.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xf69269935a5f96b2f1a94237953866f013627671b331cfce4f67f8fcd9d876a4","name":"Alexander Grychtolik","registered_at":"2026-06-17T02:52:04Z","symbol":"NIM1258115","token_address":"0xcf03ceae821cead23970000e8258a52516515e34","type":"artist","uuid":"6b2508ff-c567-4492-bad0-1cc766103a72"}