Al Hammerman
type: MusicGroup
genre: ragtime
popularity: 7
followers: 110
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcda62e6dc7d6fc6e605e22c71abf8490a564e5106ba3527d911e4d5869b9ca8c
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/04a85201-5d0a-446a-8164-57685fb4b342.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04a85201-5d0a-446a-8164-57685fb4b342.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/04a85201-5d0a-446a-8164-57685fb4b342
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcda62e6dc7d6fc6e605e22c71abf8490a564e5106ba3527d911e4d5869b9ca8c","name":"Al Hammerman","registered_at":"2026-06-15T15:03:33Z","symbol":"NIM0745373","token_address":"0x4aceea068a0b5060e4feedaf061966a482457e86","type":"artist","uuid":"04a85201-5d0a-446a-8164-57685fb4b342"}
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 0xcda62e6dc7d6fc6e605e22c71abf8490a564e5106ba3527d911e4d5869b9ca8c. 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/04a85201-5d0a-446a-8164-57685fb4b342.json and https://artists.proofprofile.net/proofs/artist/04a85201-5d0a-446a-8164-57685fb4b342.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T00:30:31Z
  text: {"copyright_id":"0xcda62e6dc7d6fc6e605e22c71abf8490a564e5106ba3527d911e4d5869b9ca8c","name":"Al Hammerman","registered_at":"2026-06-15T15:03:33Z","symbol":"NIM0745373","token_address":"0x4aceea068a0b5060e4feedaf061966a482457e86","type":"artist","uuid":"04a85201-5d0a-446a-8164-57685fb4b342"}
album: Al Hammerman, All New Songs
  type: MusicAlbum
  date published: 2006-02-24
album: Al Hammerman, Just Lucky
  type: MusicAlbum
  date published: 2008-01-01
album: I Got a Song
  type: MusicAlbum
  date published: 2011-12-01
album: Catalina Girl
  type: MusicAlbum
  date published: 2016-11-18
album: Just a Dance
  type: MusicAlbum
  date published: 2021-07-02