Block by Hash

Endpoint

POST /info

Request Body

Parameter	Type	Description
type*	string	Must be "blockByHash"
hash*	string	Block hash (0x-prefixed hex), e.g., "0x1234abcd..."

Response

Same format as Block by Number:

{
  "blockNumber": 12345,
  "timestamp": 1701234567890,
  "transactionCount": 15,
  "blockHash": "0x1234abcd...",
  "transactions": [...]
}

Example Request

curl -X POST https://api.notional.xyz/info \
  -H "Content-Type: application/json" \
  -d '{
    "type": "blockByHash",
    "hash": "0x1234abcd..."
  }'

Error Responses

{
  "error": "Block with hash 0x1234abcd... not found"
}

HTTP Status: 400 Bad Request

Notes

• Block hash lookup requires scanning the chain (O(n))
• Use block number for faster lookups when possible