Cal Stamp
type: MusicGroup
popularity: 2
followers: 216
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3c8d6f15b9e222583e53e311814ebf2ead304f519c5e78afc2783d7b3c39bd9c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8e26776c-5cb6-42e4-9b99-9c5f76b83cd4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8e26776c-5cb6-42e4-9b99-9c5f76b83cd4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8e26776c-5cb6-42e4-9b99-9c5f76b83cd4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3c8d6f15b9e222583e53e311814ebf2ead304f519c5e78afc2783d7b3c39bd9c","name":"Cal Stamp","registered_at":"2026-06-17T15:37:41Z","symbol":"NIM1440662","token_address":"0x9280522cb8a48ba32c61e15775fd97996fc8f992","type":"artist","uuid":"8e26776c-5cb6-42e4-9b99-9c5f76b83cd4"}
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 0x3c8d6f15b9e222583e53e311814ebf2ead304f519c5e78afc2783d7b3c39bd9c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e26776c-5cb6-42e4-9b99-9c5f76b83cd4.json and https://artists.proofprofile.net/proofs/artist/8e26776c-5cb6-42e4-9b99-9c5f76b83cd4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x3c8d6f15b9e222583e53e311814ebf2ead304f519c5e78afc2783d7b3c39bd9c","name":"Cal Stamp","registered_at":"2026-06-17T15:37:41Z","symbol":"NIM1440662","token_address":"0x9280522cb8a48ba32c61e15775fd97996fc8f992","type":"artist","uuid":"8e26776c-5cb6-42e4-9b99-9c5f76b83cd4"}
album: Hey Amy
  type: MusicAlbum
  date published: 2022-02-25
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  type: MusicAlbum
  date published: 2022-03-25
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  type: MusicAlbum
  date published: 2022-04-22
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  type: MusicAlbum
  date published: 2022-05-20
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  type: MusicAlbum
  date published: 2022-07-01
album: Run Right Back to Me
  type: MusicAlbum
  date published: 2022-07-29
album: Don't Make Me Wait!
  type: MusicAlbum
  date published: 2022-09-09
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  type: MusicAlbum
  date published: 2022-10-14
album: Invincible
  type: MusicAlbum
  date published: 2023-01-27
album: 21 Years
  type: MusicAlbum
  date published: 2023-02-24
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  type: MusicAlbum
  date published: 2023-03-24
album: LEATHER
  type: MusicAlbum
  date published: 2023-04-21
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  type: MusicAlbum
  date published: 2024-01-19