Johanna Sadonis
type: MusicGroup
popularity: 5
followers: 90
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1f75944e9a90c93758e1e8a5bb5eb0e037ffe02e5ca3746717f6074f7c78a885
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c795ad89-2ca5-4d91-b826-de5f809259e6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c795ad89-2ca5-4d91-b826-de5f809259e6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c795ad89-2ca5-4d91-b826-de5f809259e6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1f75944e9a90c93758e1e8a5bb5eb0e037ffe02e5ca3746717f6074f7c78a885","name":"Johanna Sadonis","registered_at":"2026-06-20T21:33:13Z","symbol":"NIM1720854","token_address":"0x8617ff880adbd77c43e65c91ac862495c7209ade","type":"artist","uuid":"c795ad89-2ca5-4d91-b826-de5f809259e6"}
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 0x1f75944e9a90c93758e1e8a5bb5eb0e037ffe02e5ca3746717f6074f7c78a885. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c795ad89-2ca5-4d91-b826-de5f809259e6.json and https://artists.proofprofile.net/proofs/artist/c795ad89-2ca5-4d91-b826-de5f809259e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0x1f75944e9a90c93758e1e8a5bb5eb0e037ffe02e5ca3746717f6074f7c78a885","name":"Johanna Sadonis","registered_at":"2026-06-20T21:33:13Z","symbol":"NIM1720854","token_address":"0x8617ff880adbd77c43e65c91ac862495c7209ade","type":"artist","uuid":"c795ad89-2ca5-4d91-b826-de5f809259e6"}