The Calendar Years
type: MusicGroup
popularity: 3
followers: 198
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3457e2e7270c8bfd05706920852a0e244592f4af2b9274f5e292b27975e7bb8a
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/56407165-4b1d-4796-aac1-7711cce86681.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/56407165-4b1d-4796-aac1-7711cce86681.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/56407165-4b1d-4796-aac1-7711cce86681
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3457e2e7270c8bfd05706920852a0e244592f4af2b9274f5e292b27975e7bb8a","name":"The Calendar Years","registered_at":"2026-06-16T19:46:09Z","symbol":"NIM1156500","token_address":"0x7889a5d1aa604cfea65574edf3498e20eb47b212","type":"artist","uuid":"56407165-4b1d-4796-aac1-7711cce86681"}
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 0x3457e2e7270c8bfd05706920852a0e244592f4af2b9274f5e292b27975e7bb8a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56407165-4b1d-4796-aac1-7711cce86681.json and https://artists.proofprofile.net/proofs/artist/56407165-4b1d-4796-aac1-7711cce86681.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x3457e2e7270c8bfd05706920852a0e244592f4af2b9274f5e292b27975e7bb8a","name":"The Calendar Years","registered_at":"2026-06-16T19:46:09Z","symbol":"NIM1156500","token_address":"0x7889a5d1aa604cfea65574edf3498e20eb47b212","type":"artist","uuid":"56407165-4b1d-4796-aac1-7711cce86681"}
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