All Questions
36 questions
1
vote
2
answers
36
views
How to Calculate Space for PDA Accounts with Dynamic Vectors in Solana?
I am working on a NFT staking program. I need to create a PDA account with a structure that includes a dynamic Vec.
Here's the structure:
#[account]
pub struct UserNftStakeAccount {
pub user: ...
- 35
0
votes
0
answers
35
views
How to Properly Interact with Pool Token Account in a Liquidity Pool Program using Anchor?
I'm working on a Solana program using Anchor that implements a liquidity pool with a loan feature. The pool is initialized and funded by users (liquidity providers) who deposit assets into the pool. ...
- 1
0
votes
3
answers
429
views
cargo build works but `cargo build-sbf` and `anchor build` fail with unsupported target error
I am working on a Solana program and facing issues building my project. When I run cargo build, the build completes successfully but doesn't generate the required .so file for deployment. Additionally,...
- 339
0
votes
1
answer
23
views
Transfering sol from pda to a hardcoded account pubkey
Can i transfer money from a program owned PDA to a hardcoded pubkey without AccountInfo of the receiver ? Or do I NEED to pass it from the client?
let hardcoded_pubkey = Pubkey::from_str("----...
2
votes
1
answer
34
views
Transfering money from a pda to a user wallet with native rust
Sorry for a noob question but im writing a solana program without anchor. And I'm having a problem with transfering sol from pda to a wallet in a program.
pub fn process_instruction(
program_id: &...
- 21
1
vote
1
answer
89
views
Error Number: 2006. Error Message: A seeds constraint was violated
My rs part:
#[derive(Accounts)] pub struct CreateLottery<'info> {
#[account(
init,
payer = authority,
space = 4 + 32 + 8 + 4 + 1 + 4 + 1 + 8, // 8 for account ...
- 121
2
votes
2
answers
285
views
Anchor Test has Transaction simulation failed: Error processing Instruction 0: custom program error: 0x0
So if I anchor build and then anchor deploy on the devnet and then use anchor test --skip-build --skip-deploy since I already built and deployed everything before, I find the first time around the all ...
- 45
1
vote
1
answer
367
views
Could not find `pda` and `state` in `mpl_token_metadata`
I have been trying to execute an anchor build command in my program, but I am facing some errors for the mpl_token_metadata package.
The error is pointed out for the below block of code:
use ...
- 115
0
votes
1
answer
72
views
How to pass multiple contexts to a single function?
I'm creating a staking contract and one of the functions that takes in the deposits, I'm using a struct in the context of transferring SPL, however, to keep the records for the same I need to create ...
1
vote
1
answer
120
views
A seeds Constraint was violated
Facing error when calling stake function. Can someone explain what am I missing?
I'm running this on Solana playground and calling stake with a random amount and selecting the current wallet for ...
0
votes
1
answer
113
views
How can I send to multiple wallets from a single PDA in a single transaction?
Very new at rust and Solana development, hoping to get some advice.
I am creating some blockchain functionality for a betting system. Players will bet on the outcome of a certain event by sending the ...
- 1
0
votes
3
answers
78
views
Is it a waste to implement HashMap via PDAs when the value type is only a bool?
When writing smart contracts for EVM chains, I can define a mapping(address => bool). When it comes to Solana, I think I can only use PDAs to achieve the same thing? Is my understanding correct?
If ...
- 419
0
votes
1
answer
87
views
How transfer SPL tokens from PDA to usual account in clean RUST?
I have PDA created in JS this way:
let [pda, bump] = await PublicKey.findProgramAddress(
[baseAccount.publicKey.toBuffer(), Buffer.from('1', 'utf8')],
programIdPublicKey
);
baseAccount is a ...
2
votes
1
answer
178
views
Deserialise getAccountInfo data from Rust rpcclient for a PDA from drift protocol
Basically I have the following code in devnet. I want to call getAccountInfo to get some account information.
I have a PDA: JD71QyQpAJvoyq4p6mfwyaw4rY9qaDLk4CQpHeuPSpEK created by the programId: ...
- 21
3
votes
1
answer
336
views
Anchor PDA Seed
I want to create an anchor PDA using the following logic:
seeds = [
b"some-text",
user.key().as_ref(),
Vec<Pubkey>,
bool
]
Is this possible? The array of pubkeys are ...
- 543
0
votes
1
answer
55
views
Invoke Signed Mint To Instruction
if let Err(error) = invoke_signed(
&SPLIX::mint_to_checked(
token_program_account.key,
contribution_mint_account.key,
contribution_token_account.key,
...
- 133
2
votes
1
answer
49
views
How is the PDA created for this program?
in this code example:
use borsh::{BorshDeserialize, BorshSerialize};
use solana_program::{
account_info::{next_account_info, AccountInfo},
declare_id,
entrypoint::ProgramResult,
msg,
...
1
vote
1
answer
154
views
PDA rent exemption collection to transaction fee payer error on account close
In a transaction, I’m trying to close an ATA and a PDA.
The ATA is closed by calling close_account from the SPL Token 2022 crate / On Chain Program, and the rent exemption can be sent without any ...
- 101
0
votes
2
answers
98
views
When to not use PDAs
I'm building a project that uses PDAs quite extensively. It seems to me that PDAs are very useful for almost every type of application (alternative for hash maps, storing user data etc) and not having ...
- 543
0
votes
1
answer
304
views
Failed to reallocate account data
I want to create a PDA account to store data about participants' wallet addresses and their deposit amounts. I have used a PDA account to store this information. It works fine when I set the array ...
- 574
2
votes
1
answer
195
views
Withdraw NFT from PDA/ TokenAccount Anchor-lang
That is what am i doing, transferring my NFTs to TokenAccount with authority as stake_account which is a PDA. How can I tranfer NFTs back to a certian wallet in anchor-lang.
use anchor_spl::token::{ ...
- 1,972
3
votes
1
answer
244
views
Do I need to create ATA for TokenAccount
library:
use anchor_spl::token::{ Token, TokenAccount, Transfer }
Token Account:
#[account(
mut,
seeds = [mint.key().as_ref(), b"nfts_vault_seed", from.key().as_ref()],
...
- 1,972
1
vote
1
answer
65
views
Can we withdraw lamports from a PDA which contains data?
U cannot withdraw lamports from a pda that contains data , u can only withdraw lamports from pda or normal account which is owned by system program and it should not contain any data at all...
2
votes
1
answer
150
views
How should generate account keys be treated?
If an account is not generated via PDA and is instead created as a new keypair, how should this new keypair be treated? Is it important to custody this somewhere secure?
https://github.com/coral-xyz/...
- 543
2
votes
0
answers
430
views
Setting account values using Zero Copy PDA on Anchor
I've created a 2D array (10x10) that using a PDA and zero_copy. Here is how I set it up.
pub fn setBoard(ctx: Context<SetBoard>, increment: u64) -> Result<()> {
let mut board = ...
- 543
3
votes
1
answer
156
views
Is there a way to get all accounts for pda with one missing seed?
#[account(
init,
payer = signer,
seeds = ["dummySeed".as_bytes(), party.key().as_ref(), member.key().as_ref()],
bump,
space = DummyStruct::LEN
)]
...
- 83
2
votes
1
answer
61
views
How to define a public key variable for use in the instruction with a lifetime of the Context<T>
I'm trying to find a PDA address inside the solana instruction like so:
pub fn receive_payload(ctx: Context<Receive>) -> Result<()> {
//ctx.accounts.lz_receive_nonce.increment()?;
...
- 121
1
vote
1
answer
97
views
Can I read information stored by a PDA without having to deserialize its byte array?
here is my on-chain code to create the PDA account
#[derive(Accounts)]
pub struct Initialize<'info> {
#[account(init, payer = user, space = 20 , seeds = [user.key().as_ref()], bump)]
...
- 83
7
votes
3
answers
749
views
How to withdraw SOL from a PDA
I want to use my pda as a vault.
Deposit function works fine, but withdraw doesn't
pub fn withdraw(ctx: Context<DepositWithdrawVault>, amount: u64) -> Result<()> {
let ...
- 345
1
vote
1
answer
92
views
In Anchor, how do I init a callee's account that's used to create CpiContext in caller's program?
I'm trying to make CPI to the callee program to initialize a config account when I do initialization in caller's program. One of the accounts used in callee's initialization used #[account(init)], but ...
- 11
0
votes
2
answers
193
views
Having a Solana program mint tokens while a user pays the fee [closed]
I'm trying to have a Solana Anchor program mint tokens to a user's token account (so the program or its PDA should be the authority for the mint), while the owner of the token account that's receiving ...
1
vote
1
answer
58
views
How can a program enforce that one of two authorities to sign a transaction?
I know I can pass in a Context to my instruction and the struct looks something like:
#[derive(Accounts)]
pub struct ListOfAccounts<'info> {
#[account(mut)]
pub ONE: AccountInfo<'info&...
- 83
1
vote
1
answer
139
views
What seeds should I use in `invoke_signed()` for PDA derived via `create_with_seed()`
I have a PDA generated with:
const SEED: &str = "My Seed";
let pda = Pubkey::create_with_seed(program_id, SEED, &owner_id).unwrap();
Where program_id and owner_id are some fixed ...
- 396
9
votes
2
answers
249
views
How to use PDAs instead of Hash maps
I'm trying to build a crowdfunding dapp and I want to store/map the Pubkey to the amount donated. I also want to get the Top 10 donors. What would have been suitable for this kind of data is hashmap ...
- 451
4
votes
1
answer
127
views
How to verify if a public key is a PDA without the seeds?
If we have a public key, how can we determine if it is a PDA? Especially in the case where we don't have any information about the source code programs related to the public key. Is it possible to ...
- 101
2
votes
2
answers
1k
views
"Error processing Instruction 0: invalid program argument" while signing transfer transaction with PDA
Can someone point out what I'm doing wrong? I'm trying to transfer SOL from a PDA to the to_account but for some reason when I call it, fails with the following error message: Error processing ...
- 51