json rpc svm

QoreChain provides a Solana-compatible JSON-RPC interface through its SVM (Solana Virtual Machine) runtime, enabling existing Solana tooling and SDKs to interact with QoreChain natively.

Connection

Transport	Default Address
HTTP	http://localhost:8899

---

Methods

Method	Parameters	Description
getAccountInfo	pubkey (base58 string)	Returns account data, owner, lamports, and executable flag
getBalance	pubkey (base58 string)	Returns the balance in lamports for the given public key
getSlot	none	Returns the current slot number
getMinimumBalanceForRentExemption	dataLength (integer)	Returns the minimum balance for rent exemption given data size
getVersion	none	Returns the node software version
getHealth	none	Returns node health status ("ok" if healthy)

---

Response Format

All responses follow the JSON-RPC 2.0 specification. Responses that reference on-chain state include a context object with the current slot:

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "context": {
      "slot": 123456
    },
    "value": { ... }
  }
}

---

Examples

getAccountInfo

Request:

curl -X POST http://localhost:8899 \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "getAccountInfo",
    "params": [
      "4Nd1mBQtrMJVYVfKf2PJy9NZUZdTAsp7D4xWLs4gDB4T",
      { "encoding": "base64" }
    ],
    "id": 1
  }'

Response:

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "context": {
      "slot": 123456
    },
    "value": {
      "data": ["AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=", "base64"],
      "executable": false,
      "lamports": 1000000000,
      "owner": "11111111111111111111111111111111",
      "rentEpoch": 0
    }
  }
}

getBalance

Request:

curl -X POST http://localhost:8899 \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "getBalance",
    "params": ["4Nd1mBQtrMJVYVfKf2PJy9NZUZdTAsp7D4xWLs4gDB4T"],
    "id": 2
  }'

Response:

{
  "jsonrpc": "2.0",
  "id": 2,
  "result": {
    "context": {
      "slot": 123456
    },
    "value": 1000000000
  }
}

getVersion

Request:

curl -X POST http://localhost:8899 \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "getVersion",
    "params": [],
    "id": 3
  }'

Response:

{
  "jsonrpc": "2.0",
  "id": 3,
  "result": {
    "solana-core": "1.18.0-qorechain",
    "feature-set": 1
  }
}

The version string 1.18.0-qorechain indicates compatibility with the Solana 1.18.0 RPC interface running on the QoreChain SVM runtime.

---

@solana/web3.js Integration

Existing Solana applications can connect to QoreChain by pointing the Connection object to the local SVM endpoint:

import { Connection, PublicKey, LAMPORTS_PER_SOL } from "@solana/web3.js";

const connection = new Connection("http://localhost:8899", "confirmed");

// Check version
const version = await connection.getVersion();
console.log("Node version:", version["solana-core"]);

// Get balance
const pubkey = new PublicKey("4Nd1mBQtrMJVYVfKf2PJy9NZUZdTAsp7D4xWLs4gDB4T");
const balance = await connection.getBalance(pubkey);
console.log("Balance:", balance / LAMPORTS_PER_SOL);

// Get slot
const slot = await connection.getSlot();
console.log("Current slot:", slot);

// Get account info
const accountInfo = await connection.getAccountInfo(pubkey);
if (accountInfo) {
  console.log("Owner:", accountInfo.owner.toBase58());
  console.log("Executable:", accountInfo.executable);
  console.log("Data length:", accountInfo.data.length);
}

---

Notes

• Address format: SVM accounts use base58-encoded public keys (standard Solana format), not the qor1 Bech32 prefix used by the native QoreChain SDK modules.

• Cross-VM bridging: To move assets between EVM and SVM runtimes, use the Cross-VM module (x/crossvm). See the Transaction Commands for crossvm call syntax.

• Program deployment: Deploy BPF programs via the CLI (qorechaind tx svm deploy-program) or programmatically through the SVM runtime.

• Compute budget: The SVM runtime enforces a compute budget of 1,400,000 compute units per transaction by default. This is configurable via module parameters.