Developer Resources

To accept HashCash payments online on your website, you can use the Business::HashCash perl module:

cpan Business::HashCash
perldoc Business::HashCash

If you develop a HashCash library for another language or would like to send feedback, please email dev at

PGP public key can be found here.

Secure Hardware Wallet

Noodle Pi is a Raspberry Pi based handheld computer which was custom designed as a permissionless, secure and cost-effective device for HashCash wallets.

There's also an Unsnoopable version, which is perfect for offline HashCash wallets.

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