Sven Zwetsloot
type: MusicGroup
popularity: 12
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe95a4796701fffcabf97d1a0d6df45e5e91bccb0ed5638f1f62bc63d39b6dedf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953625
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953625
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/22b3d84c-2d1f-4337-b56c-80117f11b291.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/22b3d84c-2d1f-4337-b56c-80117f11b291.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/22b3d84c-2d1f-4337-b56c-80117f11b291
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:37:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe95a4796701fffcabf97d1a0d6df45e5e91bccb0ed5638f1f62bc63d39b6dedf","name":"Sven Zwetsloot","registered_at":"2026-06-14T08:03:42Z","symbol":"NIM0389875","token_address":"0x9a39463d27bc41b5f7491b137d8edd7666e95b05","type":"artist","uuid":"22b3d84c-2d1f-4337-b56c-80117f11b291"}
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 0xe95a4796701fffcabf97d1a0d6df45e5e91bccb0ed5638f1f62bc63d39b6dedf. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22b3d84c-2d1f-4337-b56c-80117f11b291.json and https://artists.proofprofile.net/proofs/artist/22b3d84c-2d1f-4337-b56c-80117f11b291.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:41:45Z
  text: {"copyright_id":"0xe95a4796701fffcabf97d1a0d6df45e5e91bccb0ed5638f1f62bc63d39b6dedf","name":"Sven Zwetsloot","registered_at":"2026-06-14T08:03:42Z","symbol":"NIM0389875","token_address":"0x9a39463d27bc41b5f7491b137d8edd7666e95b05","type":"artist","uuid":"22b3d84c-2d1f-4337-b56c-80117f11b291"}