Piano Toys
type: MusicGroup
popularity: 14
followers: 300
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf38d11b6b0b60b147a18aedc9dfc12c1c790f5e63aefa26be83839093983ce4b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/90226f4c-2747-4120-ac7d-de9188dff4fa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/90226f4c-2747-4120-ac7d-de9188dff4fa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/90226f4c-2747-4120-ac7d-de9188dff4fa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:47:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf38d11b6b0b60b147a18aedc9dfc12c1c790f5e63aefa26be83839093983ce4b","name":"Piano Toys","registered_at":"2026-06-14T19:41:41Z","symbol":"NIM0556319","token_address":"0x1679631eb6a45e7bfce33c3473a70cd3df66c6c5","type":"artist","uuid":"90226f4c-2747-4120-ac7d-de9188dff4fa"}
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 0xf38d11b6b0b60b147a18aedc9dfc12c1c790f5e63aefa26be83839093983ce4b. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90226f4c-2747-4120-ac7d-de9188dff4fa.json and https://artists.proofprofile.net/proofs/artist/90226f4c-2747-4120-ac7d-de9188dff4fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0xf38d11b6b0b60b147a18aedc9dfc12c1c790f5e63aefa26be83839093983ce4b","name":"Piano Toys","registered_at":"2026-06-14T19:41:41Z","symbol":"NIM0556319","token_address":"0x1679631eb6a45e7bfce33c3473a70cd3df66c6c5","type":"artist","uuid":"90226f4c-2747-4120-ac7d-de9188dff4fa"}
album: Piano's Academic Harmony: Melodies for Study Focus
  type: MusicAlbum
  date published: 2024-06-14
album: Piano Tapestry: Woven Notes
  type: MusicAlbum
  date published: 2024-05-31