> For the complete documentation index, see [llms.txt](https://docs.bloxroute.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bloxroute.com/bsc/streams/block-streams/bdnblocks.md). # bdnBlocks **`bdnBlocks`** is a stream of all new blocks as they are propagated in the BDN. The blocks published in the **`bdnBlocks`** stream may include blocks that will not be accepted on chain. This stream offers significant performance speed over the **`newBlocks`** stream (from the Gateway or the node). **Service available on both Cloud-API and Gateway-API.** ## Stream Endpoint * Method: `bdnBlocks` * Cloud-API Endpoint: `wss://.bsc.blxrbdn.com/ws` * Gateway-API Endpoint: `ws://127.0.0.1:28333/ws` * Request type: `gRPC`*`,WSS`* {% hint style="info" %} **Performance tip:** If you don’t need parsed transaction fields, set **`parsedTxs`**`: false` to receive blocks **\~20–60 ms faster** with less overhead. {% endhint %} {% hint style="info" %} For valid `` values, refer to [Cloud API](/core-solutions/accessing-the-bdn/cloud-api.md#available-regions) {% endhint %} ### Parameters | Key | Description | Values | | ------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **`include`** | Fields to include in the block stream. |

hash,header,transactions,uncles,future\_validator\_info,withdrawals

\[Default: all]

future\_validator\_info contains validator addresses for future blocks and indicates whether the validators are connected to the BDN (currently only supported in BSC)
withdrawals

contains withdrawals for ETH block

| | **`blockchain_network`** | Use **`BSC-Mainnet`** | | | **`parsedTxs`** | Controls whether transactions in each block are returned as fully parsed JSON objects (`true`) or as raw, unparsed RLP payloads (`false`). Disabling parsing reduces server work and improves delivery latency. |

Type: boolean

\[Default: false]

| ### Examples (Websocket) #### **Cloud-API** {% tabs %} {% tab title="wscat" %} ```bash ## BSC Example wscat -c wss://virginia.bsc.blxrbdn.com/ws --header "Authorization: " > {"jsonrpc": "2.0", "id": 1, "method": "subscribe", "params": ["bdnBlocks", {"include": ["hash"], "blockchain_network": "BSC-Mainnet", "parsedTxs": true}]} < ...... ``` {% endtab %} {% tab title="Node.js" %} ```javascript var fs = require('fs'); const WebSocket = require('ws'); // Enterprise users can follow line 5-16 const ws = new WebSocket( 'wss://virginia.bsc.blxrbdn.com/ws', //for BSC { headers: { "Authorization" : }, // Add the following line if you work with IP instead of DNS // rejectUnauthorized: false, } ); function proceed() { // BSC Example (only available at endpoint wss://.bsc.blxrbdn.com/ws) ws.send(`{"jsonrpc": "2.0", "id": 1, "method": "subscribe", "params": ["bdnBlocks", {"include": ["hash"], "blockchain_network": "BSC-Mainnet"}]}`); } function handle(nextNotification) { console.log(nextNotification.toString()); // or process it generally } ws.on('open', proceed); ws.on('message', handle); ``` {% endtab %} {% tab title="Python" %} ```python import asyncio, json, ssl, websockets async def main(): auth_key = "YOUR_AUTHORIZATION_HEADER" uri = 'wss://virginia.bsc.blxrbdn.com/ws' async with websockets.connect( uri, header=["Authorization:{}".format(auth_key)], sslopt={"cert_reqs": ssl.CERT_NONE}, ) as websocket: # BSC Example (only available at endpoint wss://.bsc.blxrbdn.com/ws) subscribe_request = {"jsonrpc": "2.0", "id": 1, "method": "subscribe", "params": ["bdnBlocks", {"include": ["hash"]}, "blockchain_network": "BSC-Mainnet"]} await websocket.send(json.dumps(subscribe_request)) response = await websocket.recv() subscription_id = json.loads(response)["result"] while True: next_notification = await websocket.recv() print(next_notification) # or process it generally unsubscribe_request = { "jsonrpc": "2.0", "id": 2, "method": "unsubscribe", "params": [subscription_id] } await websocket.send(json.dumps(unsubscribe_request)) if __name__ == '__main__': asyncio.run(main()) ``` {% endtab %} {% tab title="Golang" %} ```go package main import ( "crypto/tls" "fmt" "github.com/gorilla/websocket" "net/http" ) func main() { dialer := websocket.DefaultDialer // Add the following lines if you work with IP instead of DNS // tlsConfig := &tls.Config{ // Certificates: []tls.Certificate{cert}, // InsecureSkipVerify: true, // } // dialer.TLSClientConfig = tlsConfig // Enterprise users can follow line 20 wsSubscriber, _, err := dialer.Dial("wss://virginia.eth.blxrbdn.com/ws", http.Header{"Authorization": []string{}}) // Non Enterprise users can follow line 23 // wsSubscriber, _, err := dialer.Dial("wss://api.blxrbdn.com/ws", http.Header{"Authorization": []string{}}) if err != nil { fmt.Println(err) return } // BSC Example (only available at endpoint wss://.bsc.feed.blxrbdn.com:28333) subRequest := `{"id": 1, "method": "subscribe", "params": ["bdnBlocks", {"include": ["hash"], "blockchain_network": "BSC-Mainnet"}]}` err = wsSubscriber.WriteMessage(websocket.TextMessage, []byte(subRequest)) if err != nil { fmt.Println(err) return } for { _, nextNotification, err := wsSubscriber.ReadMessage() if err != nil { fmt.Println(err) } fmt.Println(string(nextNotification)) // or process it generally } } ``` {% endtab %} {% endtabs %} #### **Gateway-API** {% tabs %} {% tab title="wscat" %} ```bash wscat -c ws://127.0.0.1:28333/ws --header "Authorization: " > {"jsonrpc": "2.0", "id": 1, "method": "subscribe", "params": ["bdnBlocks", {"include": ["hash"], "blockchain_network": "BSC-Mainnet", "parsedTxs": true}]} < ...... ``` {% endtab %} {% tab title="gRPC" %} ```go package main import ( "context" "fmt" pb "github.com/bloXroute-Labs/gateway/v2/protobuf" "google.golang.org/grpc" "google.golang.org/grpc/credentials/insecure" "time" ) type blxrCredentials struct { authorization string } func (bc blxrCredentials) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) { return map[string]string{ "authorization": bc.authorization, }, nil } func (bc blxrCredentials) RequireTransportSecurity() bool { return false } func main() { // gRPC server default values gatewayHostIP := "localhost" gatewayGRPCPort := 5001 // Open gRPC connection to Gateway. conn, _ := grpc.Dial( fmt.Sprintf("%v:%v", gatewayHostIP, gatewayGRPCPort), grpc.WithTransportCredentials(insecure.NewCredentials()), grpc.WithPerRPCCredentials(blxrCredentials{authorization: ""}), ) // Use the Gateway client connection interface. client := pb.NewGatewayClient(conn) // create context and defer cancel of context callContext, cancel := context.WithTimeout(context.Background(), 24*time.Hour) defer cancel() // Create a subscription using the stream-specific method and request. stream, _ := client.BdnBlocks(callContext, &pb.BlocksRequest{}) for { subscriptionNotification, err := stream.Recv() if err == nil { fmt.Println(subscriptionNotification) // or process it generally } } } ``` {% endtab %} {% endtabs %} #### Response (Block Event) {% hint style="info" %} This response is for when `parsedTxs` is set to `true` in the stream subscription {% endhint %} {% tabs %} {% tab title="Block Event Cloud-API" %} ```bash { "jsonrpc": "2.0", "id": 1, "method": "subscribe", "params": { "subscription": "28678fca-b084-41c5-927a-3fe5ad00d1b0", "result": { "hash": "0x382aa8c6ac7b6e2ce16f51bff3b89c382c4fce6b4c6c622c268c5ffbb0ad8d70", "Block": { "ReceivedAt": "0001-01-01T00:00:00Z", "ReceivedFrom": null }, "header": { "parentHash": "0xeaaafa74cfef87fcc450fa89da5589a8311c3aa5e49e5cbb7822591c0df3a2ca", "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347", "miner": "0xb4647b856cb9c3856d559c885bed8b43e0846a47", "stateRoot": "0xd4d4c22d508b400cb7bd902fcc4410a526079e463e8662e220ed4799eabbcbb3", "transactionsRoot": "0x6b5b908a12f1c19ed4b20c0c90ff7636e5f6e3bc7783607607968454af71f36a", "receiptsRoot": "0x358f7dd8e8f96bb9c5824e65f1c841e5234c3d9fd26ce73cf1213d069fc6b653", "logsBloom": "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", "difficulty": "0x2", "number": "0x4c7e7c0", "gasLimit": "0x3473bc0", "gasUsed": "0x9f4064", "timestamp": "0x6989d2af", "milliTimestamp": "0x19c425efe54", "extraData": "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", "mixHash": "0x00000000000000000000000000000000000000000000000000000000000002bc", "nonce": "0x0000000000000000", "baseFeePerGas": 0, "withdrawalsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421", "blobGasUsed": "0x0", "excessBlobGas": "0x0", "parentBeaconBlockRoot": "0x0000000000000000000000000000000000000000000000000000000000000000", "requestsHash": "0xe3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" }, "transactions": [ { "blobVersionedHashes": [], "from": "0xb4647b856cb9c3856d559c885bed8b43e0846a47", "gas": "0x7fffffffffffffff", "gasPrice": "0x0", "hash": "0x789fdfea773775fd70f33248845d654cf88b7e55a0c0cc20c8d407e0a7cdad3f", "input": "0xf340fa01000000000000000000000000b4647b856cb9c3856d559c885bed8b43e0846a47", "nonce": "0x1b18d7", "r": "0x6a87babc402e1906d929e7570403e87769e6ec61e6a0e3f90ddb98f4013a89eb", "s": "0x581a6d565850c8e9bc8f0b5ec2e3b62798a96b625b3ab646c0ce5514c61249e", "to": "0x0000000000000000000000000000000000001000", "type": "0x0", "v": "0x93", "value": "0x24065cf9b52e1" } ... ], "future_validator_info": [ { "block_height": 80209857, "wallet_id": "0xb4647b856cb9c3856d559c885bed8b43e0846a47", "accessible": true }, { "block_height": 80209858, "wallet_id": "0xb4647b856cb9c3856d559c885bed8b43e0846a47", "accessible": true } ] } } } ``` {% endtab %} {% tab title="Block Event Gateway-API" %} ```bash { "future_validator_info": [], "transaction": [ { "from": "", "local_region": false, "time": "0", "raw_tx": "+I6DAlTHhQHc1lHAglnYlBXsRrWI...3SFs7n3n3UUCAVX1weV6HLAcAKuA" }, .... { "from": "", "local_region": false, "time": "0", "raw_tx": "AviPgkJogwkGOoQ7mso...3Z99ZUu1/Jc0B9ytQ=" } ], "withdrawals": [ { "address": "0x9baA3244565d51D9C7897c0EB6679eD4890e536E", "amount": "0x60077b", "index": "0x104ed81", "validator_index": "0x1ee90" }, .... { "address": "0x9baA3244565d51D9C7897c0EB6679eD4890e536E", "amount": "0x604095", "index": "0x104ed90", "validator_index": "0x1ee9f" } ], "hash": "0xd9cfa479b98ae15...a7e629fe3435e6169abca", "subscriptionID": "c5451b97-c82c-47e2-a70e-74e3256584e6", "header": { "parent_hash": "0xf3fd6b6011eed8d...f482e9345a3fe5dfe9e26c1db", "sha3_uncles": "0x1dcc4de8dec75d7aa...48a7413f0a142fd40d49347", "miner": "0x0c10000000756...7f022929a97bda45", "state_root": "0xf074e94fc3d700a8f....9ea3280595bd5acd5d97d0", "transactions_root": "0xedade2fe2198c....ccf38eeaacb2ccaa92e60", "receipts_root": "0x2ff34bb52237c31b8...78e0ac369028cb63f", "logs_bloom": "0x4c0008000804...00402004048", "difficulty": "0x0", "number": "0x107336", "gas_limit": "0x1c9c380", "gas_used": "0x11bc8e3", "timestamp": "0x65e73b50", "extra_data": "0xd883010d0e846....2312e37856c696e7578", "mix_hash": "0xf6743b00bce48fc1617acf...84d781807a3866ab", "nonce": "0x0000000000000000", "base_fee_per_gas": "59", "withdrawals_root": "0x5e9855e2716a2b4793d4e...9faa41d9c876fcff1b", "blob_gas_used": "0x80000", "excess_blob_gas": "0x4b20000", "parent_beacon_root": "0xe83661292da71373c38...3a91a5e27ac4a59ea3c" } } ``` {% endtab %} {% endtabs %} --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.bloxroute.com/bsc/streams/block-streams/bdnblocks.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.