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bor_getAuthor

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`bor_getAuthor` returns the **block author** for a given block — the address of the validator that proposed (signed) that block under Polygon's Bor consensus. It is the historic counterpart of [`bor_getCurrentProposer`](./bor_getCurrentProposer.md): where the latter tells you who is proposing right now, `bor_getAuthor` answers "who proposed block *N*?" for any block in the chain's history.

This is a method in the **`bor` namespace**, a Polygon-exclusive extension of the standard EVM JSON-RPC surface. It exposes Bor consensus state — validator sets, proposers, signers, and snapshots — that is **not available on standard Geth or Erigon nodes**; calling these methods against a plain EVM provider returns a method-not-found error. Triport serves the full `bor` namespace on the Polygon endpoint.

The most common use is **validator productivity indexing**: by resolving the author of each block over an epoch you can measure how many blocks each validator proposed. Because the Polygon archive depth is **≥ 5,000,000 blocks** (roughly four months at ~2.1 s block time), you can look up authors well into the past, not just for recent blocks. `bor` methods require the **Pro** tier or higher.

Parameters

This method takes no parameters.

Returns

bor_getAuthor return value
FieldType
resultobject

Examples

curl https://<your-endpoint>/ \
  -X POST -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"bor_getAuthor","params":[]}'
const res = await fetch("https://<your-endpoint>/", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
  "id": 1,
  "method": "bor_getAuthor",
  "params": [],
  "jsonrpc": "2.0"
}),
});
const data = await res.json();
import requests
resp = requests.post("https://<your-endpoint>/", json={"id":1,"method":"bor_getAuthor","params":[],"jsonrpc":"2.0"})
print(resp.json())

Usage

  1. Transport: HTTP (JSON-RPC).
  2. Networks: mainnet.
  3. Credit cost: 1 per call.

FAQ

What does bor_getAuthor do?
Returns the block author — the validator address that proposed a given Polygon block.
How many credits does bor_getAuthor cost?
bor_getAuthor costs 1 credit(s) per call on Triport by default.
Is bor_getAuthor available over WebSocket?
bor_getAuthor is an HTTP JSON-RPC method.