Instructions and Transactions

Solduino SDK supports both high-level helpers and low-level instruction composition.

Building Blocks

• Instruction for program id, account metas, and data encoding.
• Message for accounts, recent blockhash, and compiled instructions.
• Transaction for signatures + message + instruction composition.

Typical Flow

1. Build one or more instructions.
2. Add to transaction.
3. Set recent blockhash.
4. Sign with required keypairs.
5. Serialize and submit using RPC.

Example

Transaction tx;
tx.addTransferInstruction(fromPubkey, toPubkey, 1'000'000);
tx.setRecentBlockhash(blockhash);
tx.sign(privateKey, fromPubkey);

For advanced usage, see Custom Program Interactions.