Questions tagged [blockhash]

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9 views

API mainbet: recent blockhash behind

I created an application that send a tx to a client but recently the recent blockhash from solana mainbet is behind
3 votes
2 answers
35 views

Can I somehow subscribe to the latest block hash?

I am trying to get a bit better performance for a game and would like to have the block hash already there when I send the transaction so I don't have to wait for the roundtrip to get it just before I ...
  • 637
3 votes
1 answer
46 views

spl-token 2.2.0 at solana 1.13.5 getting multisig error: Client(PresignerError(VerificationFailure))

I've been using spl-token multisig for quite a while, but recently it stopped working and I'm getting this error: Client(PresignerError(VerificationFailure)) We checked everything 10 times, rotated ...
2 votes
1 answer
40 views

Can I send the same transaction twice in the same block?

I am building a game and want to send multiple move transactions in quick succession. But when I do that I get two transactions with the same hash when the recent block hash didn't change yet and I ...
  • 637
2 votes
2 answers
405 views

Blockhash expired. 5 retries remaining

trying to deploy a program to the devnet I keep encountering this issue when my program just tries and retry to deploy with no success, any idea why this may be?: cargo-build-bpf child: /Users/juan/....
1 vote
0 answers
27 views

Latest block hash does not work on mainnet

I have a program launched onto mainnet, but I cannot connect to it. Every time I try, I get a Blockhash not found error. I have confirmed my connection works on devnet without an issue. I have tried ...
  • 11
0 votes
1 answer
55 views

How to confirm a transaction given only the transaction signature and slot number?

I want to confirm a transaction gracefully and wait for it to be finalized. I understand the best way to do this is to use the Connection.confirmTransaction method with the ...
1 vote
1 answer
156 views

signTransaction() wallet adapter

const {signTransaction} = useWallet() const transaction = new Transaction() const tx = .... //arbitrary anchor program method as transaction transaction.add(tx) const signature = signTransaction(...
10 votes
1 answer
81 views

Find the last valid block height for a given blockhash

https://docs.solana.com/developing/clients/jsonrpc-api#getlatestblockhash provides a way to get the latest blockhash and last valid block height for a given commitment. https://docs.solana.com/...
  • 468
5 votes
5 answers
160 views

Getting Error: failed to send transaction: Transaction simulation failed: Attempt to load a program that does not exist

I'm currently trying to run an escrow program and when i turn on the solana-test-validator in a different terminal it gives me this error: failed to send transaction: Transaction simulation failed: ...
  • 107