<p>They achieve the same result as if they did this, though not by actually doing it. (There are a number of obvious optimizations, for example, maintaining an indexed database of unspent outputs.)</p>

CC BY-SA 3.0
2014-05-12T10:31:15.437Z
2014-05-12T10:31:15.437Z
David Schwartz
<p>Do full nodes verify the entire transaction chain up to coinbase when verifiying a single transaction to be included on the block which they are working on ?</p>

<transactions><blockchain><verification>
Transaction verification up to coinbase?
perencia
# Transaction verification up to coinbase?

(Asked by: username_0 on 2014-05-12)

Do full nodes verify the entire transaction chain up to coinbase when verifiying a single transaction to be included on the block which they are working on ?

**Tags:** transactions, blockchain, verification


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## 1 answers

### Answer by username_1 on 2014-05-12. Score: 2 | Accepted answer

They achieve the same result as if they did this, though not by actually doing it. (There are a number of obvious optimizations, for example, maintaining an indexed database of unspent outputs.)


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