[PROPOSAL] Add optional is_gift and txs parameter and create a new gift standard

[detherminal]

There is currently no easy and safe standard way to gift Monero to people around you. It is possible to gift a wallet containing money. However, malicious people can use this to trick people into using the wallet they gifted them and steal the money after the recipient puts in more money, so this is unacceptable.

So to make gifting people Monero much safer, I propose the is_gift parameter to the monero-project standard. This parameter tells software wallets that this wallet is a gift wallet and that the money in it should be transferred to a wallet that no one but the recipient can access. For example, if I receive a gift of Monero with a QR wallet and some money in it, the wallet software should create a new wallet and after scanning the URI (which should have is_gift in it), transfer the money to the newly created secure wallet. The parameter is completely optional and software should act like a normal (non-gift) wallet if this parameter is not in the URI.

This is not enough, because software will need the tx ids to know which txs to use, so I also propose using the txs parameter to tell software what txs they should use for this wallet. After scanning the URI, wallet software should look for the given tx hashes.

Example of a complete gift wallet:

monero_wallet:42uytzD4HuEWRgqfJk9N5tfRax5Xfdqey3BqanxuorRKgR2Et2miYfMgPkch6mMC9WWqDD7hLcwhYWDcjGFYNJX6HMbU4To?spend_key=4fc14ab136971a0dcce371ef212548ea05f57afc8c0d96ccc55ffe789d123105&view_key=feb07134108bd548282239b624a172ef4d8f5e6dd8179d4cd944c4c218df3e0b&is_gift=true&txs=3c62fe4a6c17fd5daf6407d9e1ab2f78eca8f1ac8dc98e47ff8e5737e3274355,2f38e4dda63c237bfcc0461b8cea3aa6daadafa0f8e961e2916601258fe6988f

Adding this to the standard will help users choose from a wider range of options for their wallet software instead of relying on a third-party standard.

[plowsof]

txid or txids is fine. and already proposed. (IIRC cakewallet where busy with or have implemented it?) (not actually PR'd to this repo though) no need for is_gift. the wallet software can decide what to do when it encounters/expects a string of txids=...,....

you expect software to trust that a malicious person didn't remove 'is_gift' from their QR , in the hopes that someone restores the wallet and uses it as their own wallet?

[detherminal]

txid or txids is fine. and already proposed. (IIRC cakewallet where busy with or have implemented it?) (not actually PR'd to this repo though) no need for is_gift. the wallet software can decide what to do when it encounters/expects a string of txids=...,....

Standardization is needed. If proposed and accepted before, please add it to the wiki.

you expect software to trust that a malicious person didn't remove 'is_gift' from their QR , in the hopes that someone restores the wallet and uses it as their own wallet?

You never trust any gift in the first part, that's why there is a gift standardization process. I didn't really understand what you mean.