TriportRPC
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minimumLedgerSlot

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minimumLedgerSlot returns the lowest slot the node has any information about in its ledger. As the ledger is trimmed by the node's retention policy, this floor advances over time, so it marks the oldest point from which raw ledger data may still be available.

Use it to discover the earliest slot you can attempt to query against a node — for example, before walking historical slots or calling block/transaction reads on old data. If you request data below this floor, the node no longer holds it.

Gotcha — not the same as the confirmed-block floor This value may be lower than getFirstAvailableBlock. minimumLedgerSlot counts any ledger data the node retains, while getFirstAvailableBlock reports the earliest confirmed block available. A slot can be at or above minimumLedgerSlot yet still have no confirmed block to fetch. When you need a slot you can actually read a block from, prefer getFirstAvailableBlock as the floor.

Parameters

This method takes no parameters.

Returns

minimumLedgerSlot return value
FieldType
resultobject

Examples

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

Usage

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

FAQ

What does minimumLedgerSlot do?
Returns the lowest slot for which the node currently has any ledger data.
How many credits does minimumLedgerSlot cost?
minimumLedgerSlot costs 1 credit(s) per call on Triport by default.
Is minimumLedgerSlot available over WebSocket?
minimumLedgerSlot is an HTTP JSON-RPC method.