Silent Piano
type: MusicGroup
description: A silent piano is an acoustic piano where there is an option to silence the strings by stopping the hammers from striking them. A silent piano is designed for private silent practice. On modern, elect
popularity: 2
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x275cb047a7d699c4af364ff7d827b31b11a9ca0308fbf98505f0f0ada48c2311
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9a2cffe0-956f-4af7-83c2-05e2fa888226.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9a2cffe0-956f-4af7-83c2-05e2fa888226.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9a2cffe0-956f-4af7-83c2-05e2fa888226
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x275cb047a7d699c4af364ff7d827b31b11a9ca0308fbf98505f0f0ada48c2311","name":"Silent Piano","registered_at":"2026-06-17T19:28:54Z","symbol":"NIM1495862","token_address":"0xb1b9eb958419278724c02a9e5dfcb5af8c1a490e","type":"artist","uuid":"9a2cffe0-956f-4af7-83c2-05e2fa888226"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275cb047a7d699c4af364ff7d827b31b11a9ca0308fbf98505f0f0ada48c2311. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a2cffe0-956f-4af7-83c2-05e2fa888226.json and https://artists.proofprofile.net/proofs/artist/9a2cffe0-956f-4af7-83c2-05e2fa888226.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x275cb047a7d699c4af364ff7d827b31b11a9ca0308fbf98505f0f0ada48c2311","name":"Silent Piano","registered_at":"2026-06-17T19:28:54Z","symbol":"NIM1495862","token_address":"0xb1b9eb958419278724c02a9e5dfcb5af8c1a490e","type":"artist","uuid":"9a2cffe0-956f-4af7-83c2-05e2fa888226"}
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