QELT Blockchain

Query and interact with the QELT blockchain (Chain ID 770) via JSON-RPC. Use when asked about blocks, transactions, wallet balances, smart contract calls, gas estimation, event logs, nonces, or raw transaction submission. Covers QELT Mainnet (770) and Testnet (771).

QELT Blockchain Skill

QELT is an enterprise-grade EVM-compatible Layer-1 built on Hyperledger Besu 25.12.0 with QBFT consensus. Immediate finality in 5-second blocks. Zero base fee (~$0.002/tx).

Mainnet: Chain ID 770 · RPC https://mainnet.qelt.ai Testnet: Chain ID 771 · RPC https://testnet.qelt.ai Archive (historical + TRACE): https://archivem.qelt.ai

Safety

• Never request, store, print, or transmit private keys or mnemonics.
• Write operations accept pre-signed raw transactions only (hex starting with 0x).
• For historical/TRACE queries, use https://archivem.qelt.ai.
• Confirm mainnet vs testnet with the user before submitting transactions.
• Do not invent block numbers, hashes, or balances — always fetch live data.

Endpoints

Purpose	URL
Primary RPC (Mainnet)	https://mainnet.qelt.ai
Archive + TRACE (Mainnet)	https://archivem.qelt.ai
Testnet RPC	https://testnet.qelt.ai
Testnet Archive	https://archive.qelt.ai
Block Explorer	https://qeltscan.ai
Indexer API	https://mnindexer.qelt.ai

JSON-RPC Calls

All calls are standard Ethereum JSON-RPC 2.0 POST requests.

Get Latest Block Number

curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

Parse result hex → printf '%d\n' <hex>.

Get Block

# By number (hex): block 1000 = 0x3e8
curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["0x3e8",true],"id":1}'

# By hash
curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getBlockByHash","params":["0xHASH",true],"id":1}'

Get Balance

curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getBalance","params":["0xADDRESS","latest"],"id":1}'

Divide result (wei, hex) by 10^18 for QELT.

Get Transaction

curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0xTX_HASH"],"id":1}'

Get Transaction Receipt

curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getTransactionReceipt","params":["0xTX_HASH"],"id":1}'

status: "0x1" = success · status: "0x0" = reverted.

Call Smart Contract (Read-Only)

curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_call","params":[{"to":"0xCONTRACT","data":"0xCALLDATA"},"latest"],"id":1}'

Estimate Gas

curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_estimateGas","params":[{"from":"0xFROM","to":"0xTO","data":"0xDATA","value":"0x0"}],"id":1}'

Get Event Logs

Always bound the block range — querying from genesis ("0x0") scans the entire chain and is commonly rate-limited or timed out. Use a recent window (e.g., last 1,000 blocks) and page forward if you need more history.

# First get the current block number
LATEST=$(curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}' | python3 -c "import sys,json; print(json.load(sys.stdin)['result'])")

# Then query a bounded recent range (last ~1000 blocks ≈ 83 minutes on QELT)
# Clamp at 0 so the start block is never negative on a low-height chain (e.g. fresh testnet).
FROM_HEX=$(python3 -c "latest=int('$LATEST',16); print(hex(max(0, latest - 1000)))")

curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d "{\"jsonrpc\":\"2.0\",\"method\":\"eth_getLogs\",\"params\":[{\"fromBlock\":\"$FROM_HEX\",\"toBlock\":\"latest\",\"address\":\"0xCONTRACT\",\"topics\":[\"0xTOPIC\"]}],\"id\":1}"

For full historical log scans, use https://archivem.qelt.ai and page in chunks of ≤10,000 blocks to avoid timeouts.

Get Contract Code

curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getCode","params":["0xCONTRACT","latest"],"id":1}'

"0x" = EOA · anything longer = deployed contract.

Get Nonce

curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getTransactionCount","params":["0xADDRESS","latest"],"id":1}'

Send Pre-Signed Transaction

⚠️ Write operation — confirm with user before executing.

curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_sendRawTransaction","params":["0xSIGNED_TX_HEX"],"id":1}'

Returns the transaction hash on success.

Chain Info

# Chain ID
curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'

# Gas price
curl -fsSL -X POST https://mainnet.qelt.ai \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_gasPrice","params":[],"id":1}'

Network Reference

Parameter	Mainnet	Testnet
Chain ID	770 (0x302)	771 (0x303)
RPC	https://mainnet.qelt.ai	https://testnet.qelt.ai
Archive	https://archivem.qelt.ai	https://archive.qelt.ai
Indexer	https://mnindexer.qelt.ai	https://tnindexer.qelt.ai
Block Time	5 seconds	5 seconds
Gas Limit	50,000,000	50,000,000
Base Fee	0	0
EVM	Cancun	Cancun
Testnet Faucet	—	https://testnet.qeltscan.ai/faucet

MetaMask Config (Mainnet)

{
  "chainId": "0x302",
  "chainName": "QELT Mainnet",
  "nativeCurrency": { "name": "QELT", "symbol": "QELT", "decimals": 18 },
  "rpcUrls": ["https://mainnet.qelt.ai"],
  "blockExplorerUrls": ["https://qeltscan.ai"]
}

Common Errors

Error	Cause	Fix
execution reverted	Contract call failed	Check ABI encoding
nonce too low	Stale nonce	Fetch fresh nonce with eth_getTransactionCount
insufficient funds	No QELT for gas	Fund wallet or use testnet faucet
unknown block	Archive query on validator	Use https://archivem.qelt.ai
HTTP 429/503	Rate limited	Exponential backoff