Sofia Ferra
type: MusicGroup
genre: lullaby
popularity: 40
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x332b02a731341805948ac49d1eaf6f99d42b734a6498393ceb9f69138a967fde
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/a1af0aac-9911-4564-b4bc-f87e1e31410d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a1af0aac-9911-4564-b4bc-f87e1e31410d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a1af0aac-9911-4564-b4bc-f87e1e31410d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x332b02a731341805948ac49d1eaf6f99d42b734a6498393ceb9f69138a967fde","name":"Sofia Ferra","registered_at":"2026-06-12T06:07:39Z","symbol":"NIM0209684","token_address":"0xfdb2392b1b5de3474314c9a50edcb2def71979a8","type":"artist","uuid":"a1af0aac-9911-4564-b4bc-f87e1e31410d"}
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 0x332b02a731341805948ac49d1eaf6f99d42b734a6498393ceb9f69138a967fde. 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/a1af0aac-9911-4564-b4bc-f87e1e31410d.json and https://artists.proofprofile.net/proofs/artist/a1af0aac-9911-4564-b4bc-f87e1e31410d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x332b02a731341805948ac49d1eaf6f99d42b734a6498393ceb9f69138a967fde","name":"Sofia Ferra","registered_at":"2026-06-12T06:07:39Z","symbol":"NIM0209684","token_address":"0xfdb2392b1b5de3474314c9a50edcb2def71979a8","type":"artist","uuid":"a1af0aac-9911-4564-b4bc-f87e1e31410d"}
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