getCompressionSignaturesForAccount

curl --request POST \
  --url https://mainnet.helius-rpc.com/ \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "getCompressionSignaturesForAccount",
  "params": {
    "hash": "11111112cMQwSC9qirWGjZM6gLGwW69X22mqwLLGP"
  }
}'

{
  "context": {
    "slot": 100
  },
  "value": {
    "items": [
      {
        "blockTime": 1714081554,
        "signature": "5J8H5sTvEhnGcB4R8K1n7mfoiWUD9RzPVGES7e3WxC7c",
        "slot": 100
      }
    ]
  }
}