J.Hammer
type: MusicGroup
popularity: 17
followers: 470
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe018ecf172d6ed65944aeb4d911b006acc1e24f318b001e95a8d7760d5e5156e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953701
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953701
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/762f62c1-97c1-46e6-8c86-f36b60e6cc38.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/762f62c1-97c1-46e6-8c86-f36b60e6cc38.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/762f62c1-97c1-46e6-8c86-f36b60e6cc38
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T22:16:40Z
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 0xe018ecf172d6ed65944aeb4d911b006acc1e24f318b001e95a8d7760d5e5156e. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/762f62c1-97c1-46e6-8c86-f36b60e6cc38.json and https://artists.proofprofile.net/proofs/artist/762f62c1-97c1-46e6-8c86-f36b60e6cc38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T22:16:40Z
album: Aida Loves Swimming, Minecraft and Tarentum, Pennsylvania
  type: MusicAlbum
  date published: 2016-07-12
album: Donovyn Loves Weebles, Snoopy and Littleton, Colorado
  type: MusicAlbum
  date published: 2017-03-27
album: Mackenzie Loves Bike Riding, Little Mermaid and Winthrop Harbor, Illinois
  type: MusicAlbum
  date published: 2018-08-23
album: William Loves Action Movies, Popcorn, and Conroe, Texas.
  type: MusicAlbum
  date published: 2019-01-31
album: Lucas Likes Bikes, Pretzels, and Chips, Long Valley, New Jersey
  type: MusicAlbum
  date published: 2019-05-14