Verifiable proof-of-existence for research & creative artifacts using OpenTimestamps on Bitcoin Blockchain. Secure your intellectual property timeline without revealing sensitive content.
Created to serve researchers, creators, and developers building new Innovations worldwide
Built on proven cryptographic principles with user privacy and security as core foundations.
Only cryptographic hashes are published — never your original files or content. Zero intellectual property leakage guaranteed.
Timestamps are anchored in Bitcoin's blockchain using OpenTimestamps — immutable and independently verifiable forever.
CLI tools, GitHub Actions, and embeddable widgets. Integrate timestamping into your existing workflow seamlessly.
Simple, secure, and transparent process in four steps
Your document is hashed (SHA-256) on your device. The original never leaves your control.
Only the hash is sent to OpenTimestamps calendars — no content, no metadata.
Calendars aggregate hashes into Bitcoin transactions, creating immutable proof.
Download your .ots receipt — mathematically proves your document existed at that time.
Try our verification tool with a sample file, or explore our Public Ledger to see how others are using provable timestamps.
Check out our documentation for detailed guides, API references, and integration examples.
Read Documentation →