Johan Sander
type: MusicGroup
popularity: 48
followers: 364
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b82b9de07e110b5adf5355cc71d77f60e47941a819c865f4ec1872dc53d1e02
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb2087d3-2f4a-4cf2-b175-bafb86cba095.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb2087d3-2f4a-4cf2-b175-bafb86cba095.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/eb2087d3-2f4a-4cf2-b175-bafb86cba095
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2b82b9de07e110b5adf5355cc71d77f60e47941a819c865f4ec1872dc53d1e02","name":"Johan Sander","registered_at":"2026-06-12T12:52:33Z","symbol":"NIM0303446","token_address":"0xb216ea77e91ef3a548056d1d5fb24b747e76e10f","type":"artist","uuid":"eb2087d3-2f4a-4cf2-b175-bafb86cba095"}
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 0x2b82b9de07e110b5adf5355cc71d77f60e47941a819c865f4ec1872dc53d1e02. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb2087d3-2f4a-4cf2-b175-bafb86cba095.json and https://artists.proofprofile.net/proofs/artist/eb2087d3-2f4a-4cf2-b175-bafb86cba095.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x2b82b9de07e110b5adf5355cc71d77f60e47941a819c865f4ec1872dc53d1e02","name":"Johan Sander","registered_at":"2026-06-12T12:52:33Z","symbol":"NIM0303446","token_address":"0xb216ea77e91ef3a548056d1d5fb24b747e76e10f","type":"artist","uuid":"eb2087d3-2f4a-4cf2-b175-bafb86cba095"}
album: Piano & Strings (Vol. 3)
  type: MusicAlbum
  date published: 2023-08-11
album: Piano & Strings (Vol. 4)
  type: MusicAlbum
  date published: 2023-08-25