Matilda Larsson
type: MusicGroup
popularity: 4
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcbd9a50e3a4f0b3edf7a5e78356e230122adac97137f690ae12a1da5823fc2fa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2c594cc-18d6-4294-b6b9-8b62cd5c219b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2c594cc-18d6-4294-b6b9-8b62cd5c219b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a2c594cc-18d6-4294-b6b9-8b62cd5c219b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcbd9a50e3a4f0b3edf7a5e78356e230122adac97137f690ae12a1da5823fc2fa","name":"Matilda Larsson","registered_at":"2026-06-20T06:19:24Z","symbol":"NIM1538773","token_address":"0x73cf1c493d53fcec3170905ffb51d41dbf0b4139","type":"artist","uuid":"a2c594cc-18d6-4294-b6b9-8b62cd5c219b"}
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 0xcbd9a50e3a4f0b3edf7a5e78356e230122adac97137f690ae12a1da5823fc2fa. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2c594cc-18d6-4294-b6b9-8b62cd5c219b.json and https://artists.proofprofile.net/proofs/artist/a2c594cc-18d6-4294-b6b9-8b62cd5c219b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0xcbd9a50e3a4f0b3edf7a5e78356e230122adac97137f690ae12a1da5823fc2fa","name":"Matilda Larsson","registered_at":"2026-06-20T06:19:24Z","symbol":"NIM1538773","token_address":"0x73cf1c493d53fcec3170905ffb51d41dbf0b4139","type":"artist","uuid":"a2c594cc-18d6-4294-b6b9-8b62cd5c219b"}