Johan Smits
type: MusicGroup
popularity: 5
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8f4d0e0f4fe27e745665cb22c48b8aa547e70bdce06738ba94bb676a290f2493
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c9e6307-4d9f-46ce-b78f-58c4770826ee.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c9e6307-4d9f-46ce-b78f-58c4770826ee.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9c9e6307-4d9f-46ce-b78f-58c4770826ee
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8f4d0e0f4fe27e745665cb22c48b8aa547e70bdce06738ba94bb676a290f2493","name":"Johan Smits","registered_at":"2026-06-20T04:17:33Z","symbol":"NIM1508759","token_address":"0x885db619e7614ef2e41217413d0ad5307486722f","type":"artist","uuid":"9c9e6307-4d9f-46ce-b78f-58c4770826ee"}
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 0x8f4d0e0f4fe27e745665cb22c48b8aa547e70bdce06738ba94bb676a290f2493. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c9e6307-4d9f-46ce-b78f-58c4770826ee.json and https://artists.proofprofile.net/proofs/artist/9c9e6307-4d9f-46ce-b78f-58c4770826ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0x8f4d0e0f4fe27e745665cb22c48b8aa547e70bdce06738ba94bb676a290f2493","name":"Johan Smits","registered_at":"2026-06-20T04:17:33Z","symbol":"NIM1508759","token_address":"0x885db619e7614ef2e41217413d0ad5307486722f","type":"artist","uuid":"9c9e6307-4d9f-46ce-b78f-58c4770826ee"}
album: In the Ghetto (aus "The Voice of Germany 2025")
  type: MusicAlbum
  date published: 2025-09-27