Time Capsule
type: MusicGroup
description: thumb|upright=1.2|Time capsule plaque in Ypsilanti, Michigan, with instructions for the capsule to be recovered and opened upon the city's bicentennial, on July 4, 2023 thumb|Typewritten documents rec
popularity: 2
followers: 91
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5264c546e554484169fb93aa75b1686db975fc1190a26418b0bd5d227b46084a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953963
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953963
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2823d62c-0b2b-4800-ab62-9394cfe23fdb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2823d62c-0b2b-4800-ab62-9394cfe23fdb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2823d62c-0b2b-4800-ab62-9394cfe23fdb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T15:12:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5264c546e554484169fb93aa75b1686db975fc1190a26418b0bd5d227b46084a","name":"Time Capsule","registered_at":"2026-06-16T03:30:04Z","symbol":"NIM0923533","token_address":"0x59bf4359402dec25e6aed108c08db5b2ecc25c22","type":"artist","uuid":"2823d62c-0b2b-4800-ab62-9394cfe23fdb"}
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 0x5264c546e554484169fb93aa75b1686db975fc1190a26418b0bd5d227b46084a. Chain 2 (Bitcoin): anchored in block 953963 (2026-06-16T15:12:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2823d62c-0b2b-4800-ab62-9394cfe23fdb.json and https://artists.proofprofile.net/proofs/artist/2823d62c-0b2b-4800-ab62-9394cfe23fdb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T15:12:33Z
  text: {"copyright_id":"0x5264c546e554484169fb93aa75b1686db975fc1190a26418b0bd5d227b46084a","name":"Time Capsule","registered_at":"2026-06-16T03:30:04Z","symbol":"NIM0923533","token_address":"0x59bf4359402dec25e6aed108c08db5b2ecc25c22","type":"artist","uuid":"2823d62c-0b2b-4800-ab62-9394cfe23fdb"}
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  type: MusicAlbum
  date published: 2023-07-06
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  type: MusicAlbum
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