Help with website translation validation

Hi everyone, sorry to speak in english in your chinese forum but I am here for some help from native chinese speakers.

I am part of the Peercoin community and I am seeking help validating translations for our peercoin.net website and Peerunity wallet client.

I need to check that this few randomly selected paragraph; translated from our fellow Peercoin chinese translator are correct and clearly understandable for native chinese speakers. It is a routine check to ensure the quality of the translations.

I would like if you could just quote each paragraph and if correct for you just write under it VALID if clearly understandable for you.
I will write the chinese translation followed by the english original text.

Number 1

点点币通过很低的能源消耗为代价，并奖励所有为增强网络安全的用户，从而使得它成为最安全的加密电子货币。
Peercoin seeks to be the most secure cryptocoin at the lowest cost, by rewarding all users for strengthening the network.

Number 2

确保你的钱包使用了良好的密码进行过加密。将密码写下来并且保存在安全的地方，如果你忘记了你的密码，那么你将失去你所有的点点币。你可以在Peerunity钱包设置菜单中找到钱包加密选项。
Ensure your wallet is encrypted with a good passphrase. Write this down and keep it somewhere safe; if you forget the passphrase you will lose your coins. The wallet encryption option can be found under the settings tab in Peerunity.

Number 3

点点币问世于2012年，它是目前存在的时间最久和最可靠的加密货币网络之一。
Peercoin was launched in 2012, making it one of the oldest and most reliable cryptocoin networks in existence.

Thank you for your help!
GLock