#cryptography

Articles tagged with #cryptography

SHA-256 Cryptographic Hashing for Developers: File Integrity Proof
Learn how SHA-256 hashing works with Python examples. See why changing one pixel completely changes the hash and how this proves file integrity.
Jun 10, 20265 min read
Verify Blockchain Timestamps with Python's verify-proof Package
Verify Blockchain Timestamps with Python's verify-proof Package Your application receives a file and a JSON proof claiming the file was timestamped on a blockchain before a specific date. You need to verify that claim programmatically without trustin...
May 4, 20263 min read
Verify Blockchain File Proofs with Python's verify-proof Package
Your application receives a file and a JSON proof claiming the file was timestamped on a blockchain before a critical event occurred. How do you verify that claim programmatically? The verify-proof Python package handles this exact scenario, providing offline verification of blockchain-anchored file hashes without network dependencies.
Apr 28, 20265 min read
Verify ProofLedger Blockchain Timestamps in Python
Your claims system receives a timestamped photo. The adjuster says it was taken before the storm. The metadata says yesterday. Who's right? When building software for insurance or legal contexts, you
Apr 20, 20265 min read1
Verifying Blockchain Timestamps: A Developer's Guide to Evidence Authentication
A file's metadata can lie. EXIF timestamps get stripped. Creation dates change when copied. But a hash anchored to a blockchain can't be faked. Here's how to verify ProofLedger timestamps programmatic
Apr 20, 20265 min read2
Verify Blockchain Timestamps with Python and SHA-256
You get a file from a client who claims they created it last month. They show you a blockchain timestamp as proof. How do you verify that timestamp is legitimate without trusting their word? I built P
Apr 20, 20265 min read5