Sara Cosmi
type: MusicGroup
popularity: 2
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x04984d5348d48ab55cbd4b3b9c120e854715caf288b71f21bf5a7d67f3eb8428
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a09b156a-a792-4421-91fe-44a07d29d7af.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a09b156a-a792-4421-91fe-44a07d29d7af.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a09b156a-a792-4421-91fe-44a07d29d7af
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x04984d5348d48ab55cbd4b3b9c120e854715caf288b71f21bf5a7d67f3eb8428","name":"Sara Cosmi","registered_at":"2026-06-20T05:14:57Z","symbol":"NIM1526521","token_address":"0x2555a14297a4c186ae798fe7f0ecd277b26001c9","type":"artist","uuid":"a09b156a-a792-4421-91fe-44a07d29d7af"}
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 0x04984d5348d48ab55cbd4b3b9c120e854715caf288b71f21bf5a7d67f3eb8428. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a09b156a-a792-4421-91fe-44a07d29d7af.json and https://artists.proofprofile.net/proofs/artist/a09b156a-a792-4421-91fe-44a07d29d7af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0x04984d5348d48ab55cbd4b3b9c120e854715caf288b71f21bf5a7d67f3eb8428","name":"Sara Cosmi","registered_at":"2026-06-20T05:14:57Z","symbol":"NIM1526521","token_address":"0x2555a14297a4c186ae798fe7f0ecd277b26001c9","type":"artist","uuid":"a09b156a-a792-4421-91fe-44a07d29d7af"}