I Smile In Vain
type: MusicGroup
popularity: 5
followers: 70
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2fc3d1a42648a7112fa775b82501f8efa59c4d273fd308bf3c93607a68494f28
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4856e5a0-cf59-4857-8a45-1389e5baa7a6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4856e5a0-cf59-4857-8a45-1389e5baa7a6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4856e5a0-cf59-4857-8a45-1389e5baa7a6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2fc3d1a42648a7112fa775b82501f8efa59c4d273fd308bf3c93607a68494f28","name":"I Smile In Vain","registered_at":"2026-06-16T14:49:34Z","symbol":"NIM1085731","token_address":"0x28b4b73f5df366a720f8f5e7dcd73d32635022cb","type":"artist","uuid":"4856e5a0-cf59-4857-8a45-1389e5baa7a6"}
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 0x2fc3d1a42648a7112fa775b82501f8efa59c4d273fd308bf3c93607a68494f28. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4856e5a0-cf59-4857-8a45-1389e5baa7a6.json and https://artists.proofprofile.net/proofs/artist/4856e5a0-cf59-4857-8a45-1389e5baa7a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x2fc3d1a42648a7112fa775b82501f8efa59c4d273fd308bf3c93607a68494f28","name":"I Smile In Vain","registered_at":"2026-06-16T14:49:34Z","symbol":"NIM1085731","token_address":"0x28b4b73f5df366a720f8f5e7dcd73d32635022cb","type":"artist","uuid":"4856e5a0-cf59-4857-8a45-1389e5baa7a6"}
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