David Tobocman
type: MusicGroup
popularity: 2
followers: 153
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe0c444f28898bbe86e13efc2f419bd7b3456ccc6bdb25fee0a6dcf4a9a9d0512
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953860
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953860
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/026f573d-1e2d-4a47-bd3f-b5483e05f493.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/026f573d-1e2d-4a47-bd3f-b5483e05f493.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/026f573d-1e2d-4a47-bd3f-b5483e05f493
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:55:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe0c444f28898bbe86e13efc2f419bd7b3456ccc6bdb25fee0a6dcf4a9a9d0512","name":"David Tobocman","registered_at":"2026-06-15T14:34:28Z","symbol":"NIM0738430","token_address":"0x018a3ddb17a0b7e7fd3882d5e6c965b3fe4723bc","type":"artist","uuid":"026f573d-1e2d-4a47-bd3f-b5483e05f493"}
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 0xe0c444f28898bbe86e13efc2f419bd7b3456ccc6bdb25fee0a6dcf4a9a9d0512. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/026f573d-1e2d-4a47-bd3f-b5483e05f493.json and https://artists.proofprofile.net/proofs/artist/026f573d-1e2d-4a47-bd3f-b5483e05f493.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T23:55:46Z
  text: {"copyright_id":"0xe0c444f28898bbe86e13efc2f419bd7b3456ccc6bdb25fee0a6dcf4a9a9d0512","name":"David Tobocman","registered_at":"2026-06-15T14:34:28Z","symbol":"NIM0738430","token_address":"0x018a3ddb17a0b7e7fd3882d5e6c965b3fe4723bc","type":"artist","uuid":"026f573d-1e2d-4a47-bd3f-b5483e05f493"}
album: I Count To Ten And Other Very Helpful Songs
  type: MusicAlbum
  date published: 2008-03-04
album: Lemonade School
  type: MusicAlbum
  date published: 2010-08-20
album: Gonna Be Great
  type: MusicAlbum
  date published: 2017-07-06
album: Sing!
  type: MusicAlbum
  date published: 2017-07-07
album: Lemonade School
  type: MusicAlbum
  date published: 2017-07-08
album: I Count to Ten and Other Very Helpful Songs
  type: MusicAlbum
  date published: 2017-07-08
album: Escalator
  type: MusicAlbum
  date published: 2017-07-08
album: Hanukkah All Over the World
  type: MusicAlbum
  date published: 2017-07-13
album: These Waters (Strings Only)
  type: MusicAlbum
  date published: 2025-11-11