Timestamp documents on Bitcoin from $0. One blockstamp proves one file existed and hasn't changed since.
Free
For trying it out and occasional personal use.
5 blockstamps free to start
Top up 10 blockstamps for $10
API access included
Bitcoin payments only
Personal
For steady, low-volume use without manual top-ups.
10 blockstamps every month
Unused blockstamps roll over and never expire
Extra blockstamps $1.00 each — packs of 1, 10, 20 or 30
API access included
Subscription by card; top-ups by card or Bitcoin
Business
For teams building proof into a workflow or product.
30 blockstamps every month
Unused blockstamps roll over and never expire
Extra blockstamps $0.75 each — 25% less than Personal
API access included
Subscription by card; top-ups by card or Bitcoin
Enterprise
For governments, agencies and organisations with high-volume or regulated record-keeping.
Everything in Business, plus volume pricing
Invoicing and procurement support
Dedicated onboarding
Service level agreement
No hard stops — overage billed on invoice
One document, one hash, or any file up to 25 MB. If you submit a batch, each file in it counts as one blockstamp.
Yes. Anything you don't use carries forward to the next month, and rolled-over blockstamps never expire.
Timestamping pauses until you top up — you are never charged automatically for going over. Buy a pack and you are running again straight away. Enterprise plans can be set up without hard stops, with overage billed on invoice.
Not at the moment — all plans are billed monthly. For volume or multi-year commitments, talk to us about an Enterprise plan.
Yes — API access is included on every plan, including Free. We will send your API keys by email after you sign up.
Tell us how many records you need to protect and we will recommend a plan, or build you a custom one.
Contact us
