RPC Endpoints

# Current block number
curl https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
# → {"jsonrpc":"2.0","id":1,"result":"0x100123"}

# Chain ID
curl https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'
# → {"result":"0x499b4da"}  (77117002 decimal)

# Peer count
curl https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"net_peerCount","params":[],"id":1}'

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

# PRESS balance for an address
curl https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_getBalance",
    "params": ["0xYOUR_ADDRESS", "latest"],
    "id": 1
  }'

# Transaction count (nonce)
curl https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_getTransactionCount",
    "params": ["0xYOUR_ADDRESS", "latest"],
    "id": 1
  }'

# eth_call - read a view function
curl https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_call",
    "params": [{
      "to": "0x4b39edF3fA0e7DBAFFA45FDCBbE08B6681D1076b",
      "data": "0x..."
    }, "latest"],
    "id": 1
  }'

# Estimate gas
curl https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_estimateGas",
    "params": [{"to": "0x...", "data": "0x..."}],
    "id": 1
  }'

# Submit a signed transaction
curl https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_sendRawTransaction",
    "params": ["0xSIGNED_TX_HEX"],
    "id": 1
  }'

# Get transaction by hash
curl https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_getTransactionByHash",
    "params": ["0xTX_HASH"],
    "id": 1
  }'

# Get transaction receipt (after mining)
curl https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_getTransactionReceipt",
    "params": ["0xTX_HASH"],
    "id": 1
  }'

# Get logs - filter by contract and event topic
curl https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [{
      "fromBlock": "0x0",
      "toBlock": "latest",
      "address": "0x121885Cd339BF495cbC63e0f49e16c7CB2A1C62a",
      "topics": ["0xCAPSULE_ACCEPTED_TOPIC_HASH"]
    }],
    "id": 1
  }'

import { JsonRpcProvider, WebSocketProvider, Contract, formatUnits } from "ethers";

// HTTP provider
const provider = new JsonRpcProvider("https://rpc.presschain.io");

// Archive provider - for historical state
const archive = new JsonRpcProvider("https://archive.rpc.presschain.io");

// WebSocket provider - real-time events
const ws = new WebSocketProvider("wss://ws.presschain.io");

// Basic queries
const block   = await provider.getBlockNumber();
const balance = await provider.getBalance("0xADDRESS");
const network = await provider.getNetwork();

console.log("Chain ID:", network.chainId.toString()); // "77117002"
console.log("Block:   ", block);
console.log("Balance: ", formatUnits(balance, 18), "PRESS");

const ws = new WebSocketProvider("wss://ws.presschain.io");

// Subscribe to new blocks
ws.on("block", (blockNumber: number) => {
  console.log("New block:", blockNumber);
});

// Subscribe to ArticleRegistry events
import ArticleRegistryABI from "./abis/ArticleRegistry.json";

const registry = new Contract(
  "0x121885Cd339BF495cbC63e0f49e16c7CB2A1C62a",
  ArticleRegistryABI,
  ws
);

// Watch for capsule submissions
registry.on("CapsuleSubmitted", (capsuleId, outletSlug, submitter, event) => {
  console.log(`New capsule #${capsuleId} from ${outletSlug}`);
});

// Watch for capsule acceptance
registry.on("CapsuleAccepted", (capsuleId, outletSlug, acceptedAt, event) => {
  console.log(`Capsule #${capsuleId} accepted at block ${event.blockNumber}`);
});

// Watch for votes cast
const acceptance = new Contract(
  "0x63D0c0b51a3856a539b36a909517a18BddDb4a32",
  CapsuleAcceptanceABI,
  ws
);

acceptance.on("VoteCast", (capsuleId, voter, support, weight, event) => {
  console.log(`Vote on #${capsuleId}: ${support ? "YES" : "NO"} (weight: ${weight})`);
});

// Get balance at a specific block
const historicalBalance = await archive.getBalance(
  "0xADDRESS",
  1_000_000   // block number
);

// Get contract state at a past block
const pastCapsuleCount = await registry.capsuleCount({ blockTag: 500_000 });

// Full log history from genesis
const allAcceptances = await archive.getLogs({
  address: "0x121885Cd339BF495cbC63e0f49e16c7CB2A1C62a",
  fromBlock: 0,
  toBlock: "latest",
  topics: [registry.interface.getEvent("CapsuleAccepted")!.topicHash]
});

#!/bin/bash
# Quick RPC health check
RESULT=$(curl -s https://rpc.presschain.io \
  -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}')

BLOCK=$(echo $RESULT | python3 -c "
import sys, json
r = json.load(sys.stdin)
print(int(r.get('result','0x0'), 16))
" 2>/dev/null)

echo "RPC Status: $([ -n "$BLOCK" ] && echo "OK" || echo "FAIL")"
echo "Block: ${BLOCK:-N/A}"