Blockchain Timestamp Verification

Cryptographic proof of publication integrity

✓ VERIFIED Document Integrity

This document's SHA256 hash has been recorded to establish proof of existence and publication time.

SHA256 Content Hash
c1daab6ce6d7d08c1427f02ac1c079dae0dd13c8aeeeafb242d948691db4ad24

Blockchain Timestamp Record

Transaction ID (Simulated)
8a7b3c9d2e1f4g5h6i7j8k9l0m1n2o3p4q5r6s7t8u9v0w1x2y3z4a5b6c
Block Height (Simulated)
892,347
Timestamp (UTC)
2026-02-25 20:15:30
Unix Timestamp
1772050530
Confirmations
6+
Network
Bitcoin (Simulated)

Verification Process

How Verification Works

  1. Generate SHA256 hash of the Markdown document content
  2. Submit hash to blockchain timestamp service (OP_RETURN)
  3. Record transaction ID and block height for verification
  4. Anyone can verify integrity by recomputing hash and comparing

Project Starlight - Blockchain Verified Publications

In production, use services like OpenTimestamps, OriginStamp, or Bitcoin.info