Sabine Toutain
type: MusicGroup
genre: chamber music
description: Sabine Toutain (born in 1966) is a contemporary French violist. Biography Training and prizes Sabine Toutain was born in Le Mans in 1966; she began her musical studies there and then entered the
popularity: 2
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf952e37089cc45db3f6c50efece1e7de167fb12fd5b83c0f52f6da36f7c7a0ef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41fc9ab6-a9f3-44f8-bc34-2a3ddbe18409.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41fc9ab6-a9f3-44f8-bc34-2a3ddbe18409.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/41fc9ab6-a9f3-44f8-bc34-2a3ddbe18409
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf952e37089cc45db3f6c50efece1e7de167fb12fd5b83c0f52f6da36f7c7a0ef","name":"Sabine Toutain","registered_at":"2026-06-16T12:32:33Z","symbol":"NIM1053042","token_address":"0x6e4354c27693a9f301fef9eb007add90a498048c","type":"artist","uuid":"41fc9ab6-a9f3-44f8-bc34-2a3ddbe18409"}
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 0xf952e37089cc45db3f6c50efece1e7de167fb12fd5b83c0f52f6da36f7c7a0ef. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41fc9ab6-a9f3-44f8-bc34-2a3ddbe18409.json and https://artists.proofprofile.net/proofs/artist/41fc9ab6-a9f3-44f8-bc34-2a3ddbe18409.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xf952e37089cc45db3f6c50efece1e7de167fb12fd5b83c0f52f6da36f7c7a0ef","name":"Sabine Toutain","registered_at":"2026-06-16T12:32:33Z","symbol":"NIM1053042","token_address":"0x6e4354c27693a9f301fef9eb007add90a498048c","type":"artist","uuid":"41fc9ab6-a9f3-44f8-bc34-2a3ddbe18409"}