On-chain payment check

Confirm a stablecoin payment directly from a public node. Never trust a screenshot or an explorer link alone — read the receipt.

Inputs to collect

• Transaction hash (EVM: 0x + 64 hex; TRON: 64 hex, with or without 0x).
• Network. If unknown: a 0x… hash on several EVM chains is ambiguous — ask, or try each RPC below.
• Optional expectations: recipient address, token, exact amount.

Token contracts

Public RPCs: https://ethereum-rpc.publicnode.com, https://bsc-dataseed.bnbchain.org, https://mainnet.base.org, https://arb1.arbitrum.io/rpc, https://polygon-bor-rpc.publicnode.com, TRON https://api.trongrid.io.

EVM procedure

1. eth_getTransactionReceipt for the hash. null → not found or still pending.
2. status must be 0x1.
3. Find logs where address equals the token contract (case-insensitive) and topics[0] is 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef (Transfer).
   • from = last 40 hex chars of topics[1], to = last 40 of topics[2], value = data as uint256.
4. Confirmations = eth_blockNumber − receipt.blockNumber + 1. Treat ≥ 12 (Ethereum), 15 (BNB), 10 (Base/Arbitrum), 30 (Polygon) as final.

curl -s https://mainnet.base.org -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_getTransactionReceipt","params":["0xHASH"]}'

TRON procedure

1. POST https://api.trongrid.io/walletsolidity/gettransactioninfobyid with {"value":"<hash without 0x>"}. An empty {} means not yet solidified (irreversible) — wait and retry; /wallet/gettransactioninfobyid shows unconfirmed state.
2. receipt.result must be SUCCESS.
3. In log[], address is the contract as 40 hex chars (prefix 41 to get the TRON hex address). Match a614f803b6fd780986a42c78ec9c7f77e6ded13c for USDT. Topics are as on EVM; convert hex addresses to base58 (41 + 20 bytes, base58check) before comparing with T… addresses.

Report

State clearly: network, token, from, to, amount (divide by 10^decimals, keep all decimals), status, confirmations, and whether each expectation matched. If anything does not match, say which field and the actual value. Never round an amount when the user is matching an exact payment.