Le Petit Trianon
type: MusicGroup
genre: chamber music
description: Le Petit Trianon is a historic mansion on the grounds of De Anza College at 21250 Stevens Creek Blvd. in Cupertino, California. The building now serves as the California History Center. History thumb
popularity: 4
followers: 161
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b0dbffd640d6399b2181292c0283cf15ba3506c7f4a68bd5bbf33dcfe1a9a6d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0492c883-92be-43db-bc75-046bfaeaef0b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0492c883-92be-43db-bc75-046bfaeaef0b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0492c883-92be-43db-bc75-046bfaeaef0b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2b0dbffd640d6399b2181292c0283cf15ba3506c7f4a68bd5bbf33dcfe1a9a6d","name":"Le Petit Trianon","registered_at":"2026-06-15T15:11:36Z","symbol":"NIM0747288","token_address":"0xc36d3891594ca4f8d90d5d0ddaf29a492fa28127","type":"artist","uuid":"0492c883-92be-43db-bc75-046bfaeaef0b"}
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 0x2b0dbffd640d6399b2181292c0283cf15ba3506c7f4a68bd5bbf33dcfe1a9a6d. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0492c883-92be-43db-bc75-046bfaeaef0b.json and https://artists.proofprofile.net/proofs/artist/0492c883-92be-43db-bc75-046bfaeaef0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x2b0dbffd640d6399b2181292c0283cf15ba3506c7f4a68bd5bbf33dcfe1a9a6d","name":"Le Petit Trianon","registered_at":"2026-06-15T15:11:36Z","symbol":"NIM0747288","token_address":"0xc36d3891594ca4f8d90d5d0ddaf29a492fa28127","type":"artist","uuid":"0492c883-92be-43db-bc75-046bfaeaef0b"}