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Getting and sending transactions with Celestia Node's Gateway API

In this tutorial, we will cover how to use the Celestia Node Gateway API to submit and retrieve messages from the Data Availability Layer by their namespace ID.

This tutorial assumes you are working in a Linux environment.

To view a video tutorial for setting up a Celestia Light Node, click here.

Hardware requirements​

The following minimum hardware requirements are recommended for running a light node:

  • Memory: 2 GB RAM
  • CPU: Single Core
  • Disk: 25 GB SSD Storage
  • Bandwidth: 56 Kbps for Download/56 Kbps for Upload

Setting up dependencies​

First, make sure to update and upgrade the OS:

sudo apt update && sudo apt upgrade -y

These are essential packages that are necessary to execute many tasks like downloading files, compiling, and monitoring the node:

sudo apt install curl tar wget clang pkg-config libssl-dev jq build-essential git make ncdu -y

Install Golang​

celestia-app and celestia-node are written in Golang so we must install Golang to build and run them.

ver="1.20.2"
cd $HOME
wget "https://golang.org/dl/go$ver.linux-amd64.tar.gz"
sudo rm -rf /usr/local/go
sudo tar -C /usr/local -xzf "go$ver.linux-amd64.tar.gz"
rm "go$ver.linux-amd64.tar.gz"

Now we need to add the /usr/local/go/bin directory to $PATH:

echo "export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin" >> $HOME/.bash_profile
source $HOME/.bash_profile

To check if Go was installed correctly run:

go version

The output should be the version installed:

go version go1.20.2 linux/amd64

Celestia node​

Install Celestia Node​

Installing celestia-node for the Blockspace Race testnet means installing a specific version to be compatible with the network.

Install the celestia-node binary by running the following commands:

cd $HOME
rm -rf celestia-node
git clone https://github.com/celestiaorg/celestia-node.git
cd celestia-node/
git checkout tags/v0.10.2
make build
make install
make cel-key

Verify that the binary is working and check the version with the celestia version command:

$ celestia version
Semantic version: v0.10.2
Commit: 960b522ec4ed2fb2069a220e2cef2da609158f4d
Build Date: Thu Dec 15 10:19:22 PM UTC 2022
System version: amd64/linux
Golang version: go1.20.2

Instantiate a Celestia light node​

Now, let's instantiate a Celestia Light node:

Note: RPC Endpoints are exposed in all celestia-node types such as Light, Bridge and Full Nodes.

celestia light init --p2p.network blockspacerace

Connect to a public core endpoint​

Let's now run the Celestia Light node with a GRPC connection to an example public core endpoint.

Note: You are also encouraged to find a community-run API endpoint and there are several in the Discord. This one is used for demonstration purposes. You can find a list of RPC endpoints here.

celestia light start --core.ip <ip-address> --gateway --gateway.addr <ip-address> --gateway.port <port> --p2p.network blockspacerace
tip

The --core.ip gRPC port defaults to 9090, so if you do not specify it in the command line, it will default to that port. You can add the port after the IP address or use the --core.grpc.port flag to specify another port if you prefer.

Please refer to the ports section for information on which ports are required to be open on your machine.

For example, your command along with an RPC endpoint might look like this:

celestia light start --core.ip <ip-address> --gateway --gateway.addr 127.0.0.1 --gateway.port 26659 --p2p.network blockspacerace
tip

Please refer to the ports section for information on which ports are required to be open on your machine.

Keys and wallets​

You can create your key for your node by running the following command:

./cel-key add <key_name> --keyring-backend test --node.type light --p2p.network <network>

You can start your light node with the key created above by running the following command:

celestia light start --core.ip <ip-address> --keyring.accname <key_name> --gateway --gateway.addr <ip-address> --gateway.port <port> --p2p.network blockspacerace
tip

Please refer to the ports section for information on which ports are required to be open on your machine.

Once you start the Light Node, a wallet key will be generated for you. You will need to fund that address with Mocha Testnet or Arabica Devnet tokens to pay for PayForData transactions or PayForBlob transactions, respectively.

You can find the address by running the following command in the celestia-node directory:

./cel-key list --node.type light --keyring-backend test --p2p.network <network>

If you would like to fund your wallet with testnet tokens, head over to either the #mocha-faucet or #arabica-faucet channels on the Celestia Discord.

You can request funds to your wallet address using the following command in Discord:

$request <Wallet-Address>

Where <Wallet-Address> is the celestia1****** address generated when you created the wallet.

With your wallet funded, you can move on to the next step.

Node API calls​

Open up another terminal window in order to begin querying the API. celestia-node exposes its REST gateway on port 26659 by default.

Deprecation Notice

This endpoint will soon be deprecated in favor of RPC equivalent. Learn more about the RPC here.

Balance​

Now, let's query our node for the balance of its default account (which is the account associated with the developer key we generated earlier):

curl -X GET http://127.0.0.1:26659/balance

It will output the following:

{
   "denom":"utia",
   "amount":"999995000000000"
}

This shows you the balance in that wallet.

Get block header​

Now, let's get the block header information.

Here we will get the header from Block 1:

curl -X GET http://127.0.0.1:26659/header/1

It will output something like this:

{
   "header":{
      "version":{
         "block":11
      },
      "chain_id":"devnet-2",
      "height":1,
      "time":"2021-11-23T02:24:05.965728875Z",
      "last_block_id":{
         "hash":"",
         "parts":{
            "total":0,
            "hash":""
         }
      },
      "last_commit_hash":"E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855",
      "data_hash":"7B578B351B1B0BBD70BB350019EBC964C44A140A37EF715B552A7F8F315ACD19",
      "validators_hash":"7F4EA93A134DEDBDA6A1FDD30D05760DD98A2B5FBA95DB3EFFFE7FCE4B361855",
      "next_validators_hash":"7F4EA93A134DEDBDA6A1FDD30D05760DD98A2B5FBA95DB3EFFFE7FCE4B361855",
      "consensus_hash":"048091BC7DDC283F77BFBF91D73C44DA58C3DF8A9CBC867405D8B7F3DAADA22F",
      "app_hash":"E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855",
      "last_results_hash":"E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855",
      "evidence_hash":"E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855",
      "proposer_address":"04881EB0A0A4C1DB414C708249CEEC2FCF348F3E"
   },
   "commit":{
      "height":1,
      "round":1,
      "block_id":{
         "hash":"4632277C441CA6155C4374AC56048CF4CFE3CBB2476E07A548644435980D5E17",
         "parts":{
            "total":1,
            "hash":"BE1B789969938DB061B7723BE45C8A7B4B27192339A8E0A4E216775B2CB58D97"
         }
      },
      "signatures":[
         {
            "block_id_flag":2,
            "validator_address":"03F1044A6DF782189C7061FF89146B3D33608F17",
            "timestamp":"2021-11-23T11:53:56.123958759Z",
            "signature":"q/XF7Nc2ThcQgWfqi6LYOUEqLcU+sgVPY1nB2CLWdjRo80WwI6xy6QaYx1B0lmcKAkWR0YMxbc7vJzKF70qwBA=="
         },
         {
            "block_id_flag":2,
            "validator_address":"04881EB0A0A4C1DB414C708249CEEC2FCF348F3E",
            "timestamp":"2021-11-23T11:53:56.036027188Z",
            "signature":"0bbxeviCvgLlyIF47JoY1CMN2e/MhHtFzhdgV0zCM+P3qeO/rkh+0TSxoRVUB1MDvMCoA8hyffCw3amxympMAA=="
         },
         {
            "block_id_flag":2,
            "validator_address":"31711F367349D1BD619BD0A39568A69614B8A048",
            "timestamp":"2021-11-23T11:53:56.135943844Z",
            "signature":"gT23rZ8+XcG5rQ9QS+uh+Wn5eAiJDVy8bh23Fb8hevnHsuO1er2892MXAohaLRF6TTWs/C6dItYph4B/k3b6DQ=="
         },
         {
            "block_id_flag":2,
            "validator_address":"5A253EC2A9AB20AFD48C7BED2AFCA53F5C80BCA6",
            "timestamp":"2021-11-23T11:53:56.081698742Z",
            "signature":"nMngIlJ7PPPtu0N20YwKhWt/H3/JrEKJC3rnS5KG/8J3IppTacuwjGDUqIuHpRlrD0MmWa1mlY+6+ulbytt2AA=="
         },
         {
            "block_id_flag":2,
            "validator_address":"79BEB39F4B396F9278DA03F1C97F9BE3B10B12D3",
            "timestamp":"2021-11-23T11:53:56.037896319Z",
            "signature":"wPAL/sK4YXSU7iRXl00GDLvi4IItVlkY2zRkxIUeV9VA3Tq8Tke6wGE0N6pXKmtMcKUMoyjm03RWHv4mrtj1BA=="
         },
         {
            "block_id_flag":1,
            "validator_address":"",
            "timestamp":"0001-01-01T00:00:00Z",
            "signature":null
         },
         {
            "block_id_flag":1,
            "validator_address":"",
            "timestamp":"0001-01-01T00:00:00Z",
            "signature":null
         },
         {
            "block_id_flag":2,
            "validator_address":"D345D62BBD18C301B843DF7C65F10E57AB17BD98",
            "timestamp":"2021-11-23T11:53:56.123499237Z",
            "signature":"puj5Epw3yPGjSsJk6aQI74S2prgL7+cuiEpCxXYzQxOi0kNIqh8UMZLYf+AVHDQNJXehSmrAK6+VsIt9NF0DDg=="
         },
         {
            "block_id_flag":2,
            "validator_address":"DEC2642E786A941511A401090D21621E7F08A36D",
            "timestamp":"2021-11-23T11:53:56.123136439Z",
            "signature":"J/lnFqARXj42Lfx5MGY0FO/wug+AyQRxTnQp1u1HyczvV+0hXXuk06Uosi61jQKgJG6JBJF2VidqA41/uKMEDw=="
         }
      ]
   },
   "validator_set":{
      "validators":[
         {
            "address":"03F1044A6DF782189C7061FF89146B3D33608F17",
            "pub_key":"sMcFgSIzlD77eZYgV7H4akyxoHCPc2oIQW05qWEB6b4=",
            "voting_power":5000,
            "proposer_priority":-40000
         },
         {
            "address":"04881EB0A0A4C1DB414C708249CEEC2FCF348F3E",
            "pub_key":"WdqZ8hoyc1HxZCJfQrAGKm2fFJZFg7PngPNGkA1RWXc=",
            "voting_power":5000,
            "proposer_priority":5000
         },
         {
            "address":"31711F367349D1BD619BD0A39568A69614B8A048",
            "pub_key":"pvwSRksq3ekXIiYK7IzjQJ870BxLqEma8zRr9n9VnXI=",
            "voting_power":5000,
            "proposer_priority":5000
         },
         {
            "address":"5A253EC2A9AB20AFD48C7BED2AFCA53F5C80BCA6",
            "pub_key":"RnmnTlKoKxNoh2TpohBDP3cKlx4ATiPOCvQFk/6xpUU=",
            "voting_power":5000,
            "proposer_priority":5000
         },
         {
            "address":"79BEB39F4B396F9278DA03F1C97F9BE3B10B12D3",
            "pub_key":"oh/N+GOIennBOAa/gPNCso1mDlqaHQNn7Op/X8opbeY=",
            "voting_power":5000,
            "proposer_priority":5000
         },
         {
            "address":"7F1105B7B219481810C49730AECB1A83036BCA3A",
            "pub_key":"Ow/AHP/Q3guPGymUKpvhnwae+QoCOpGztpVnP179IG8=",
            "voting_power":5000,
            "proposer_priority":5000
         },
         {
            "address":"87265CC17922E01497F40B701EC9F05373B83467",
            "pub_key":"MNi0Z+uNF5X1Bxj988IDXVl0BKUcLs7LItoMnX6dbg4=",
            "voting_power":5000,
            "proposer_priority":5000
         },
         {
            "address":"D345D62BBD18C301B843DF7C65F10E57AB17BD98",
            "pub_key":"4g3hhdyU4IIgWW/4sR0nax8bsC/M/fDbt1N8s/QanF8=",
            "voting_power":5000,
            "proposer_priority":5000
         },
         {
            "address":"DEC2642E786A941511A401090D21621E7F08A36D",
            "pub_key":"b+Vv6Lcp0bhIjOQncr+OYBHixCvU5+k34y4RqyvpluE=",
            "voting_power":5000,
            "proposer_priority":5000
         }
      ],
      "proposer":{
         "address":"03F1044A6DF782189C7061FF89146B3D33608F17",
         "pub_key":"sMcFgSIzlD77eZYgV7H4akyxoHCPc2oIQW05qWEB6b4=",
         "voting_power":5000,
         "proposer_priority":-40000
      }
   },
   "dah":{
      "row_roots":[
         "//////////7//////////uyLCVMJmAItYqbOqgHXm3OwHsq1xQiAX1kZV2Tgcobm",
         "/////////////////////ykyWNfDJZfigziZC5BN5L00KKuoyDPduwynDywauskL"
      ],
      "column_roots":[
         "//////////7//////////uyLCVMJmAItYqbOqgHXm3OwHsq1xQiAX1kZV2Tgcobm",
         "/////////////////////ykyWNfDJZfigziZC5BN5L00KKuoyDPduwynDywauskL"
      ]
   }
}

Submit a PFB transaction​

In this example, we will be submitting a PayForBlob transaction to the node's /submit_pfb endpoint.

Some things to consider:

  • PFB is a PayForBlob Message.
  • The endpoint also takes in a namespace_id and data values.
  • Namespace ID should be 8 bytes.
  • Data is in hex-encoded bytes of the raw message.
  • gas_limit is the limit of gas to use for the transaction

We use the following namespace_id of 0000010000000100 and the data value of f1f20ca8007e910a3bf8b2e61da0f26bca07ef78717a6ea54165f5.

You can generate your own namespace_id and data values using this useful Golang Playground we created here.

caution

When running a Celestia node, you will need to use the following flags when starting your node to submit a PFB:

  • the --core.ip string flag, to allow you to submit transactions to your node
  • the --gateway, --gateway.addr string, and --gateway.port string, to open the gateway and allow anyone to use your IP as an endpoint to submit PFBs

We run the following:

curl -X POST -d '{"namespace_id": "0c204d39600fddd3",
  "data": "f1f20ca8007e910a3bf8b2e61da0f26bca07ef78717a6ea54165f5",
  "gas_limit": 80000, "fee": 2000}' http://localhost:26659/submit_pfb

We get the following output:

{
  "height": 4249,
  "txhash": "B31DEA16E1F3EE13895D4A70FE808801E8BCF8381AACD5071CB51E929F17AB65",
  "codespace": "undefined",
  "code": 111222,
  "raw_log": "recovered: UnmarshalJSON cannot decode empty bytes\nstack:\ngoroutine 61 [running]:\nruntime/debug.Stack()\n\t/usr/local/go/src/runtime/debug/stack.go:24 +0x65\ngithub.com/cosmos/cosmos-sdk/baseapp.newDefaultRecoveryMiddleware.func1({0x1f63960, 0xc00653eef0})\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/baseapp/recovery.go:71 +0x27\ngithub.com/cosmos/cosmos-sdk/baseapp.newRecoveryMiddleware.func1({0x1f63960?, 0xc00653eef0?})\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/baseapp/recovery.go:39 +0x30\ngithub.com/cosmos/cosmos-sdk/baseapp.processRecovery({0x1f63960, 0xc00653eef0}, 0xc0091f4580?)\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/baseapp/recovery.go:28 +0x37\ngithub.com/cosmos/cosmos-sdk/baseapp.processRecovery({0x1f63960, 0xc00653eef0}, 0x2d32158?)\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/baseapp/recovery.go:33 +0x5e\ngithub.com/cosmos/cosmos-sdk/baseapp.(*BaseApp).runTx.func1()\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/baseapp/baseapp.go:639 +0xf0\npanic({0x1f63960, 0xc00653eef0})\n\t/usr/local/go/src/runtime/panic.go:838 +0x207\ngithub.com/cosmos/cosmos-sdk/x/params/types.Subspace.Get({{0x2d31748, 0xc001099090}, 0xc0004ee198, {0x2d0e170, 0xc001099730}, {0x2d0e1c0, 0xc001099c10}, {0xc00168aba0, 0x4, 0x12}, ...}, ...)\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/x/params/types/subspace.go:110 +0x307\ngithub.com/celestiaorg/celestia-app/x/blob/keeper.Keeper.GasPerBlobByte(...)\n\t/celestia-app/x/blob/keeper/params.go:36\ngithub.com/celestiaorg/celestia-app/x/blob/keeper.Keeper.PayForBlobs({{0x2d31748, 0xc001099090}, {0x2d0e170, 0xc001099ac0}, {0x2d0e170, 0x0}, {{0x2d31748, 0xc001099090}, 0xc0004ee198, {0x2d0e170, ...}, ...}}, ...)\n\t/celestia-app/x/blob/keeper/keeper.go:60 +0x3a8\ngithub.com/celestiaorg/celestia-app/x/blob.NewHandler.func1({{0x2d24c58, 0xc000138020}, {0x2d32158, 0xc00acc0680}, {{0xb, 0x0}, {0xc0067752e0, 0x9}, 0x1099, {0x5f89ec0, ...}, ...}, ...}, ...)\n\t/celestia-app/x/blob/handler.go:20 +0x195\ngithub.com/cosmos/cosmos-sdk/baseapp.(*BaseApp).runMsgs(_, {{0x2d24c58, 0xc000138020}, {0x2d32158, 0xc00acc0680}, {{0xb, 0x0}, {0xc0067752e0, 0x9}, 0x1099, ...}, ...}, ...)\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/baseapp/baseapp.go:800 +0x7a8\ngithub.com/cosmos/cosmos-sdk/baseapp.(*BaseApp).runTx(0xc000be6e00, 0x3, {0xc0026698c0, 0x143, 0x143})\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/baseapp/baseapp.go:725 +0xc45\ngithub.com/cosmos/cosmos-sdk/baseapp.(*BaseApp).DeliverTx(0xc000be6e00, {{0xc0026698c0?, 0x20?, 0xc00abfe9c0?}})\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/baseapp/abci.go:283 +0x17a\ngithub.com/tendermint/tendermint/abci/client.(*localClient).DeliverTxAsync(0xc000cf9320, {{0xc0026698c0?, 0x0?, 0xc000cf9320?}})\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/abci/client/local_client.go:93 +0x105\ngithub.com/tendermint/tendermint/proxy.(*appConnConsensus).DeliverTxAsync(0xc00a464780?, {{0xc0026698c0?, 0x20?, 0xb?}})\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/proxy/app_conn.go:88 +0x26\ngithub.com/tendermint/tendermint/state.execBlockOnProxyApp({0x2d25e10?, 0xc000d69f20}, {0x2d2ffe8, 0xc000dafdd0}, 0xc008a5ba00, {0x2d329b0, 0xc001194120}, 0x1098?)\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/state/execution.go:390 +0x822\ngithub.com/tendermint/tendermint/state.(*BlockExecutor).ApplyBlock(_, {{{0xb, 0x0}, {0xc000c8b080, 0x7}}, {0xc000c8b087, 0x9}, 0x1, 0x1098, {{0xc00a536640, ...}, ...}, ...}, ...)\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/state/execution.go:210 +0x171\ngithub.com/tendermint/tendermint/consensus.(*State).finalizeCommit(0xc0010dc700, 0x1099)\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/consensus/state.go:1668 +0xb2d\ngithub.com/tendermint/tendermint/consensus.(*State).tryFinalizeCommit(0xc0010dc700, 0x1099)\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/consensus/state.go:1576 +0x2ff\ngithub.com/tendermint/tendermint/consensus.(*State).enterCommit.func1()\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/consensus/state.go:1511 +0x87\ngithub.com/tendermint/tendermint/consensus.(*State).enterCommit(0xc0010dc700, 0x1099, 0x0)\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/consensus/state.go:1549 +0xcb7\ngithub.com/tendermint/tendermint/consensus.(*State).addVote(0xc0010dc700, 0xc008e7b220, {0x0, 0x0})\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/consensus/state.go:2171 +0xb7c\ngithub.com/tendermint/tendermint/consensus.(*State).tryAddVote(0xc0010dc700, 0xc008e7b220, {0x0?, 0x47b9a6?})\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/consensus/state.go:1963 +0x2c\ngithub.com/tendermint/tendermint/consensus.(*State).handleMsg(0xc0010dc700, {{0x2d06640?, 0xc0011f6c70?}, {0x0?, 0x0?}})\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/consensus/state.go:853 +0x44b\ngithub.com/tendermint/tendermint/consensus.(*State).receiveRoutine(0xc0010dc700, 0x0)\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/consensus/state.go:780 +0x512\ncreated by github.com/tendermint/tendermint/consensus.(*State).OnStart\n\t/go/pkg/mod/github.com/celestiaorg/[email protected]/consensus/state.go:379 +0x12d\n: panic",
  "logs": null,
  "gas_wanted": 80000,
  "gas_used": 62131,
  "events": [
    {
      "type": "coin_spent",
      "attributes": [
        {
          "key": "c3BlbmRlcg==",
          "value": "Y2VsZXN0aWExOG1lbHFkNmV0eXZ5aDZ3M3BkMDZkODRleXA5cHU1c2xuN2h5ODU=",
          "index": true
        },
        {
          "key": "YW1vdW50",
          "value": "MjAwMHV0aWE=",
          "index": true
        }
      ]
    },
    {
      "type": "coin_received",
      "attributes": [
        {
          "key": "cmVjZWl2ZXI=",
          "value": "Y2VsZXN0aWExN3hwZnZha20yYW1nOTYyeWxzNmY4NHoza2VsbDhjNWxwbmpzM3M=",
          "index": true
        },
        {
          "key": "YW1vdW50",
          "value": "MjAwMHV0aWE=",
          "index": true
        }
      ]
    },
    {
      "type": "transfer",
      "attributes": [
        {
          "key": "cmVjaXBpZW50",
          "value": "Y2VsZXN0aWExN3hwZnZha20yYW1nOTYyeWxzNmY4NHoza2VsbDhjNWxwbmpzM3M=",
          "index": true
        },
        {
          "key": "c2VuZGVy",
          "value": "Y2VsZXN0aWExOG1lbHFkNmV0eXZ5aDZ3M3BkMDZkODRleXA5cHU1c2xuN2h5ODU=",
          "index": true
        },
        {
          "key": "YW1vdW50",
          "value": "MjAwMHV0aWE=",
          "index": true
        }
      ]
    },
    {
      "type": "message",
      "attributes": [
        {
          "key": "c2VuZGVy",
          "value": "Y2VsZXN0aWExOG1lbHFkNmV0eXZ5aDZ3M3BkMDZkODRleXA5cHU1c2xuN2h5ODU=",
          "index": true
        }
      ]
    },
    {
      "type": "tx",
      "attributes": [
        {
          "key": "ZmVl",
          "value": "MjAwMHV0aWE=",
          "index": true
        },
        {
          "key": "ZmVlX3BheWVy",
          "value": "Y2VsZXN0aWExOG1lbHFkNmV0eXZ5aDZ3M3BkMDZkODRleXA5cHU1c2xuN2h5ODU=",
          "index": true
        }
      ]
    },
    {
      "type": "tx",
      "attributes": [
        {
          "key": "YWNjX3NlcQ==",
          "value": "Y2VsZXN0aWExOG1lbHFkNmV0eXZ5aDZ3M3BkMDZkODRleXA5cHU1c2xuN2h5ODUvMQ==",
          "index": true
        }
      ]
    },
    {
      "type": "tx",
      "attributes": [
        {
          "key": "c2lnbmF0dXJl",
          "value": "ZUdtRWhHNUFtYk1uUUE0MjFzdUM3RERqSE9seFBuNC81b3ZlZHB5YUI0RVpQL0RHc3NYTTEzTnUvZEVPTllBWEJ2dDFuSWpqM2JNOHZiMlEwQmhXdHc9PQ==",
          "index": true
        }
      ]
    }
  ]
}

If you notice from the above output, it returns a height of 4249 which we will use for the next command.

Note: To learn more about status response codes, please navigate to cosmos code explanation

Troubleshooting​

If you encounter an error like:

"rpc error: code = NotFound desc = account celestia1krkle0n547u0znz3unnln8paft2dq4z3rznv86 not found"

It is possible that the account you are trying to submit a PayForBlob from doesn't have testnet tokens yet. Ensure the testnet faucet has funded your account with tokens and then try again.

Get namespaced shares by block height​

After submitting your PFB transaction, upon success, the node will return the block height for which the PFB transaction was included. You can then use that block height and the namespace ID with which you submitted your PFB transaction to get your message shares returned to you. In this example, the block height we got was 2452 which we will use for the following command. Read more about shares in the Celestia Specs.

curl -X GET \
  http://localhost:26659/namespaced_shares/0c204d39600fddd3/height/4249

Will generate the following output:

{
  "shares": [
    "DCBNOWAP3dMBAAAAG/HyDKgAfpEKO/iy5h2g8mvKB+94cXpupUFl9QAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="
  ],
  "height": 4249
}

The output here is base64-encoded.