Simcha Leiner
type: MusicGroup
description: Simcha Leiner (born 1989) is an American singer, composer and entertainer in the Contemporary Jewish religious music industry. Career Leiner started singing at weddings in 2008. In 2014, he officia
popularity: 2
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0e8584c6f49cf2a6946c64e052699d64d40fb9aaa413c5ae3994e3d2683d8f98
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953896
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953896
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0f7390a2-0c02-4f1b-a4fa-8467edbae6ee.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0f7390a2-0c02-4f1b-a4fa-8467edbae6ee.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0f7390a2-0c02-4f1b-a4fa-8467edbae6ee
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:05:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0e8584c6f49cf2a6946c64e052699d64d40fb9aaa413c5ae3994e3d2683d8f98","name":"Simcha Leiner","registered_at":"2026-06-15T19:11:05Z","symbol":"NIM0804448","token_address":"0x7d92ffcbbfb9333531ef47b94b23e4b7d3185e5f","type":"artist","uuid":"0f7390a2-0c02-4f1b-a4fa-8467edbae6ee"}
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 0x0e8584c6f49cf2a6946c64e052699d64d40fb9aaa413c5ae3994e3d2683d8f98. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f7390a2-0c02-4f1b-a4fa-8467edbae6ee.json and https://artists.proofprofile.net/proofs/artist/0f7390a2-0c02-4f1b-a4fa-8467edbae6ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:05:56Z
  text: {"copyright_id":"0x0e8584c6f49cf2a6946c64e052699d64d40fb9aaa413c5ae3994e3d2683d8f98","name":"Simcha Leiner","registered_at":"2026-06-15T19:11:05Z","symbol":"NIM0804448","token_address":"0x7d92ffcbbfb9333531ef47b94b23e4b7d3185e5f","type":"artist","uuid":"0f7390a2-0c02-4f1b-a4fa-8467edbae6ee"}