Cal Combs
type: MusicGroup
popularity: 6
followers: 332
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5eb482710fdd5f203bc10c769b7237fb2ab58b126a5f83c5e157b989d84a8be0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/040ee192-9fd1-41ec-8db5-80a0e79d4efe.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/040ee192-9fd1-41ec-8db5-80a0e79d4efe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/040ee192-9fd1-41ec-8db5-80a0e79d4efe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5eb482710fdd5f203bc10c769b7237fb2ab58b126a5f83c5e157b989d84a8be0","name":"Cal Combs","registered_at":"2026-06-15T14:52:15Z","symbol":"NIM0742666","token_address":"0xf19c6d857f40546773aea7cb131df293ea15ec8c","type":"artist","uuid":"040ee192-9fd1-41ec-8db5-80a0e79d4efe"}
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 0x5eb482710fdd5f203bc10c769b7237fb2ab58b126a5f83c5e157b989d84a8be0. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/040ee192-9fd1-41ec-8db5-80a0e79d4efe.json and https://artists.proofprofile.net/proofs/artist/040ee192-9fd1-41ec-8db5-80a0e79d4efe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T00:30:31Z
  text: {"copyright_id":"0x5eb482710fdd5f203bc10c769b7237fb2ab58b126a5f83c5e157b989d84a8be0","name":"Cal Combs","registered_at":"2026-06-15T14:52:15Z","symbol":"NIM0742666","token_address":"0xf19c6d857f40546773aea7cb131df293ea15ec8c","type":"artist","uuid":"040ee192-9fd1-41ec-8db5-80a0e79d4efe"}
album: Carmel
  type: MusicAlbum
  date published: 2017-12-01
album: 505
  type: MusicAlbum
  date published: 2018-05-11
album: One Love
  type: MusicAlbum
  date published: 2020-05-10
album: 721 Walton Ave.
  type: MusicAlbum
  date published: 2024-10-25