David Isaac Feldstein
type: MusicGroup
popularity: 9
followers: 112
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2f670d7fb3de6ee37bc04b49f85510802d2ad199259de55bd8e1feba547caf8d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953943
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953943
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21a5b0d3-cc38-4d50-87b4-ef6cdace22a7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21a5b0d3-cc38-4d50-87b4-ef6cdace22a7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/21a5b0d3-cc38-4d50-87b4-ef6cdace22a7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:59:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2f670d7fb3de6ee37bc04b49f85510802d2ad199259de55bd8e1feba547caf8d","name":"David Isaac Feldstein","registered_at":"2026-06-16T01:14:49Z","symbol":"NIM0891232","token_address":"0x9746d95636c52434fea24059a73b80edc40eadf1","type":"artist","uuid":"21a5b0d3-cc38-4d50-87b4-ef6cdace22a7"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f670d7fb3de6ee37bc04b49f85510802d2ad199259de55bd8e1feba547caf8d. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21a5b0d3-cc38-4d50-87b4-ef6cdace22a7.json and https://artists.proofprofile.net/proofs/artist/21a5b0d3-cc38-4d50-87b4-ef6cdace22a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x2f670d7fb3de6ee37bc04b49f85510802d2ad199259de55bd8e1feba547caf8d","name":"David Isaac Feldstein","registered_at":"2026-06-16T01:14:49Z","symbol":"NIM0891232","token_address":"0x9746d95636c52434fea24059a73b80edc40eadf1","type":"artist","uuid":"21a5b0d3-cc38-4d50-87b4-ef6cdace22a7"}
album: Patriotic Rock 2
  type: MusicAlbum
  date published: 2015-07-17
album: Action Sports 2
  type: MusicAlbum
  date published: 2016-10-05
album: Playtime Pop
  type: MusicAlbum
  date published: 2019-04-16
album: Action Sports 3
  type: MusicAlbum
  date published: 2020-05-26
album: Action Sports 3 (Edited)
  type: MusicAlbum
  date published: 2020-05-26
album: Action Sports 4
  type: MusicAlbum
  date published: 2021-06-22