Calendars
type: MusicGroup
genre: japanese indie
genre: power pop
description: REDIRECT Calendar
popularity: 4
followers: 702
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8849e8bbf2e0d0ae8990c54c3a80f1956448ddb84b48074556fbddfcf81c7c1a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f394b5e-c909-4170-99ad-d7d5ff32500b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f394b5e-c909-4170-99ad-d7d5ff32500b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6f394b5e-c909-4170-99ad-d7d5ff32500b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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 0x8849e8bbf2e0d0ae8990c54c3a80f1956448ddb84b48074556fbddfcf81c7c1a. 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/6f394b5e-c909-4170-99ad-d7d5ff32500b.json and https://artists.proofprofile.net/proofs/artist/6f394b5e-c909-4170-99ad-d7d5ff32500b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Bad Ending, Good Humming
  type: MusicAlbum
  date published: 2008-10-01
album: Bad Ending, Good Humming
  type: MusicAlbum
  date published: 2008-10-01
album: Sweep
  type: MusicAlbum
  date published: 2012-12-05
album: Sweep
  type: MusicAlbum
  date published: 2012-12-05
album: Sweep
  type: MusicAlbum
  date published: 2012-12-05
album: POP SONGS
  type: MusicAlbum
  date published: 2016-07-06
album: POP SONGS
  type: MusicAlbum
  date published: 2016-07-06
album: Everything Is Alright
  type: MusicAlbum
  date published: 2017-01-25
album: Apart
  type: MusicAlbum
  date published: 2024-02-14
album: A.M.H
  type: MusicAlbum
  date published: 2024-07-24
album: Car
  type: MusicAlbum
  date published: 2025-03-26