> For the complete documentation index, see [llms.txt](https://hub.bsvblockchain.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hub.bsvblockchain.org/higher-learning/bsv-academy/bsv-theory/introduction/what-is-needed....md). # What is Needed... > What is needed is an electronic payment system based on cryptographic proof instead of trust, allowing any two willing parties to transact directly with each other without the need for a trusted third party. > > \- Satoshi Nakamoto, Bitcoin Whitepaper ![](/files/Gm1Lj1Xrl49wq4wrye6z) Due to the reasons outlined in the previous section, what is needed is a system that uses cryptographic knowledge proofs to allow the purchasing party (customer) to establish a firm basis of custody over the money being used in a transaction. Bitcoin achieves this by using digital signatures and a simple but fully featured scripting language. Bitcoin signatures are simple for the receiving party to validate and can be stored on the Bitcoin public ledger with efficiency and very low overheads. Because the sending party can establish control over the tokens themselves without using a third party to hold funds and manage the transfer, transactions are very fast and simple. By using Bitcoin, receivers can quickly and simply validate that funds were indeed controlled by the sending party, and that the transaction correctly allocates the correct amount to their own control without requiring additional validation by third parties. Learn more about Bitcoin Script here: --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://hub.bsvblockchain.org/higher-learning/bsv-academy/bsv-theory/introduction/what-is-needed....md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.