# Intro/Greetings (zardi)

**URL:** <https://forum.grin.mw/t/intro-greetings-zardi/10339>\
**Category:** Uncategorized\
**Created:** [February 10, 2023, 6:06pm UTC](https://forum.grin.mw/t/intro-greetings-zardi/10339 "2023-02-10T18:06:43Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![vegycslol](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.grin.mw/vegycslol/32/3340_2.png) [@vegycslol](https://forum.grin.mw/u/vegycslol)\
**Post date:** [February 11, 2023, 5:09pm UTC](https://forum.grin.mw/t/intro-greetings-zardi/10339/9 "2023-02-11T17:09:34Z")

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> [@zardigrade](#):
>
> A hard-fork, by definition, **breaks** backwards compatibility

they break forwards compatibility, [here](https://forum.grin.mw/t/hard-forks-vs-soft-forks/9112) is a good explanation of what that means.

> [@zardigrade](#):
>
> If my node is online — and someone sees that my address is online — they can still send me funds, no?

currently if you listen through tor then yes, because wallets have autoreceive functionality - i’m against keeping this functionality for various reasons (hides signing, allows spam attacks etc).

> [@zardigrade](#):
>
> What is the smallest unit of GRIN? Is it 1/100,000,000 like most other coins?

instead of 1/100,000,000 it’s 1/1,000,000,000 or 0.000000001 grin (called nanogrin).

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