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Cryptographically Awesome Keychains and Keyrings
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buy products with bitcoins
Store and share your secrets safely by splitting them into cryptographically-secure pieces. To reconstruct the original, combine a specific number of these pieces. It's simple, secure, and free.
The Unofficial Bitcoin Forum
about Bitcoin Forum
Bitcoin Charts API
Bitcoincharts provides a simple API to most of its data. You can use this API to include markets data in your websites, mobile apps or desktop applets.
about Bitcoin Charts API
Bitcoin Block Explorer & Currency Statistics. View detailed information on all bitcoin transactions and blocks.