Questions tagged [program]
The program tag has no usage guidance.
150
questions
1
vote
1
answer
40
views
Why does CandyMachine use `cmp_pubkeys` function and not an `Eq` trait?
CandyMachine program has this function, which is used extensively in the program code:
pub fn cmp_pubkeys(a: &Pubkey, b: &Pubkey) -> bool {
sol_memcmp(a.as_ref(), b.as_ref(), ...
- 275
1
vote
1
answer
215
views
How can I verify that a program has been called by another program
I have a program which should be allowed to be called by whitelisted programs only.
Currently I solved the issue as such, but I wonder whether there are other more elegant solutions (maybe, by using ...
- 275
1
vote
2
answers
276
views
Find msg.sender(payer of the tx) in a solana program
So i understand a msg.sender equivalent is the payer of the tx in solana , if so is there a way in vanilla solana or anchor to retrieve msg.sender i.e payer of the tx ?
as i understand it if there are ...
- 940
-1
votes
4
answers
116
views
Is there anything that prevents popular programs from being cloned hundreds of times by copycats?
There is a substantial precedent for various marketplaces getting trashed by copycats who reproduce original works hundreds of times in order to capture the lion share of the benefit by diluting out ...
- 762
-1
votes
1
answer
52
views
What are ways to protect a novel program solution in order to protect the IP investment of development effort? [closed]
If a team of developers invest a lot of time to build a unique solution to solve a problem, what ways can investors in their efforts protect the effective IP of that work?
- 762
0
votes
2
answers
91
views
Are all programs plainly visible within the blockchain? [closed]
Are all programs displayed in plain text?
If so, is there a way to obfuscate them so that others are not able to see the contents of the program?
- 762
1
vote
2
answers
128
views
Using Anchor, how to have PDA created without the PDA info being sent by the client?
Program:
#[derive(Accounts)]
pub struct Transact<'info> {
#[account(init, payer=payer, space= 8 + 1 + 4, seeds=[b"transaction", payer.key.as_ref()], bump)]
pub transaction: ...
- 148
-1
votes
1
answer
77
views
Is there a way to obfuscate programs so that other developers cannot reproduce my business without doing the hard work? [closed]
Are all programs plainly visible within the blockchain? Is there a way to prevent that when writing your program to protect the investment of development effort? If not, what would keep a popular ...
- 762
1
vote
2
answers
154
views
How would one hash two different pubkeys inside an Anchor program?
I am trying to setup an account constraint as such:
#[account(
init,
payer = creator,
space = StateObj::space(),
seeds = [
b"some-seed",
user_partner0.key()....
- 428
7
votes
2
answers
222
views
how to transfer native SOL from program to user
I have SOL in my program account. Is it possible to transfer that native (NOT WSOL) SOL to user?
If yes, How?
- 148
0
votes
1
answer
61
views
What is Owner Validation Program? [duplicate]
I was reading the source code of sollet.io.
Whenever they are creating an ATA, they are also calling some instruction of the Owner Validation Program: https://github.com/project-serum/spl-token-wallet/...
- 954
2
votes
1
answer
253
views
Which program is this: 4MNPdKu9wFMvEeZBMt3Eipfs5ovVWTJb31pEXDJAAxX5?
I was trying to transfer a token from Wallet 1 -> Wallet 2 using sollet.io on testnet.
It showed this error:
failed to send transaction: Transaction simulation failed: Attempt to load a program ...
- 954
1
vote
3
answers
71
views
How to bulk update accounts?
Is there a way to update a field on all the accounts owned by a program at once?
Say I have a bunch of PDAs Stake { amount: usize }.
Is it possible to do amount = amount * 1.1 for multiple accounts in ...
- 954
11
votes
1
answer
338
views
Why is SOL refunded after a program deploy?
I've noticed that some of the SOL required to deploy a program is refunded after the deploy. What's going on to cause this? Is it that the program is uploaded to multiple accounts and then one of them ...
- 3,190
8
votes
2
answers
749
views
How do I create an NFT using Anchor?
What is the simplest way to create an NFT using Anchor, without using the candy machine.
The goal is to be able to mint a token and corresponding metadata. Ideally with a single instruction.
- 761