<p>Block rewards (coinbase outputs) can't be spent for 100 blocks.</p>

<p>This is called "maturity" in the codebase and is to protect some behavior around reorganizations. </p>

CC BY-SA 3.0
2017-12-04T13:59:36.397Z
2017-12-04T13:59:36.397Z
Claris
<p>i created an altcoin with a premine for the first block. After generating the first block the transaction worked well. But on my wallet it says the that my new balance is "immature". What does that mean and how can i get the "immature balance" confirmed?</p>

<p><a href="https://camo.githubusercontent.com/8403ee1020c3c56d8ee9f4049065d8db717e1870/687474703a2f2f6934362e74696e797069632e636f6d2f33306d37706b6f2e706e67" rel="nofollow noreferrer">https://camo.githubusercontent.com/8403ee1020c3c56d8ee9f4049065d8db717e1870/687474703a2f2f6934362e74696e797069632e636f6d2f33306d37706b6f2e706e67</a></p>

<p>Kind regards</p>

<bitcoind><altcoin-development><cryptonote>
Why is my transaction immature?
Daniel Beller
# Why is my transaction immature?

(Asked by: username_0 on 2017-12-04)

i created an altcoin with a premine for the first block. After generating the first block the transaction worked well. But on my wallet it says the that my new balance is "immature". What does that mean and how can i get the "immature balance" confirmed?

<https://camo.githubusercontent.com/8403ee1020c3c56d8ee9f4049065d8db717e1870/687474703a2f2f6934362e74696e797069632e636f6d2f33306d37706b6f2e706e67>

Kind regards

**Tags:** bitcoind, altcoin-development, cryptonote


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## 1 answers

### Answer by username_1 on 2017-12-04. Score: 7

Block rewards (coinbase outputs) can't be spent for 100 blocks.

This is called "maturity" in the codebase and is to protect some behavior around reorganizations.


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