HTTP API

An overview of the Arweave HTTP API.

The Arweave protocol is based on HTTP, so any existing http clients/libraries can be used to interface with the network, for example Axios or Fetch for JavaScript, Guzzle for PHP, etc.

The default port is 1984.

Requests and queries can be sent to any Arweave node directly using their IP address, for example http://159.65.213.43:1984/info. Hostnames can also be used if configured with DNS, for example https://arweave.net/info.

Sample Request

curl --request GET \
  --url 'https://arweave.net/info'

Integrations

Arweave specific wrappers and clients are currently in development to simplify common operations and API interactions, there are currently integrations for Go, PHP, Scala (which can also be used with Java and C#) and JavaScript/TypeScript/NodeJS.

Schema

Common data structures, formats, and processes explained.

Block Format

{
  "nonce": "AAEBAAABAQAAAQAAAQEBAAEAAAABAQABAQABAAEAAAEBAAAAAQAAAAAAAQAAAQEBAAEBAAEBAQEBAQEAAQEBAAABAQEAAQAAAQABAAABAAAAAAEBAQEBAAABAQEAAAAAAAABAQAAAQAAAQEAAQABAQABAQEAAAABAAABAQABAQEAAAEBAQABAQEBAQEBAAABAQEAAAABAQABAAABAAEAAQEBAQAAAAABAQABAQAAAAAAAAABAQABAAEBAAEAAQABAQABAAEBAQEBAAEAAQABAAABAQEBAQAAAQABAQEBAAEBAQAAAQEBAQABAAEBAQEBAAAAAAABAAEAAAEAAAEAAAEBAAAAAAEAAQABAAAAAAABAQABAQAAAAEBAQAAAAABAAABAAEBAQEAAAAAAQAAAQABAQABAAEAAQABAQAAAAEBAQAAAQAAAAEBAAEBAAEBAQEAAAEBAQAAAQAAAAABAAEAAQEAAQ",
  "previous_block": "V6YjG8G3he0JIIwRtzTccX39rS0jH-jOqUJy6rxrVAHY0RT0AVhG8K22wCDxy1A0",
  "timestamp": 1528500720,
  "last_retarget": 1528500720,
  "diff": 31,
  "height": 100,
  "hash": "AAAAANsEvzGbICpfAj3NN41_ox--2cNxkEhAo0aggpDPkY7zru29g24uMWUP9hTa",
  "indep_hash": "",
  "txs": ["7BoxcxiJIjTwUp3JXp0xRJQXf6hZtyJj1kjGNiEl5A8"],
  "wallet_list": "ph2FDDuQjNbca34tz7vP9X5Xve2EGJi2ZgFqhMITAdw",
  "reward_addr": "em8MfGRInwWEAQnE6b50ENaFOf-0to4Pbygng1ilWGQ",
  "tags": [],
  "reward_pool": 60770606104,
  "weave_size": 599058,
  "block_size": 0
}

Transaction Format

Nodes and gateways accept transactions through the POST /tx endpoint. The body must be a JSON encoding of a transaction. Amounts are specified in winstons.

Transaction and block identifiers and wallet addresses, among some other fields, are encoded as Base64URL strings when sent over HTTP or put in the URLs or displayed in the block explorers.

Base64URL is case-sensitive.

For example, T414mkfW-EQWEwPtk__LMJAgawNdxZfdjxhGPQKMwDQ, t414mkfW-EQWEwPtk__LMJAgawNdxZfdjxhGPQKMwDQ, and t414mkfw-eqwewptk__lmjagawndxzfdjxhgpqkmwdq are three different addresses. It is impossible to recover tokens sent to a different case of the same address.

A transaction may be used for uploading data, transferring tokens, or both.

See the sample transactions below for full examples.

Field Definitions

Sample Transactions

{
  "format": 2,
  "id": "BNttzDav3jHVnNiV7nYbQv-GY0HQ-4XXsdkE5K9ylHQ",
  "last_tx": "jUcuEDZQy2fC6T3fHnGfYsw0D0Zl4NfuaXfwBOLiQtA",
  "owner": "posmE...psEok",
  "tags": [],
  "target": "",
  "quantity": "0",
  "data_root": "PGh0b...RtbD4",
  "data": "",
  "data_size": "1234235",
  "reward": "124145681682",
  "signature": "HZRG_...jRGB-M"
}

Transaction Signing

Transaction signatures are generated by computing a merkle root of the SHA-384 hashes of transaction fields: format, owner , target , data_root, data_size, quantity, reward, last_tx, tags, then signing the hash. Signatures are RSA-PSS with SHA-256 as the hashing function.

Key Format

Arweave uses the JSON Web Key (JWK) format (RFC 7517) with 4096 length RSA-PSS keys. This JWK format allows for cryptographic keys to be represented as a JSON object where each property represents a property of the underlying cryptographic key. It's widely supported with libraries for most popular languages. It's possible to convert a JWK to a PEM file or other crypto key file format, support for this this will vary from language to language. If you're generating your own keys manually the public exponent (e) must be 65537. If any other value is used the transactions signed by these keys will be invalid and rejected.

Addressing

The n value is the public modulus and is used as the transaction owner field, and the address of a wallet is a Base64URL encoded SHA-256 hash of the n value from the JWK.

Sample JWK

The address for this wallet is GRQ7swQO1AMyFgnuAPI7AvGQlW3lzuQuwlJbIpWV7xk.

{
  "kty": "RSA",
  "e": "AQAB",
  "n": "ovFF6EbOtXeg7VnojIgtChgxfU6GZ16JjVj5JFHh6NGHJnq4p059BnMphcDx1mqb3yxM73FxhEszSFLcJiPzway6eIDiXuYiT-Sf_0Wl6_wDLvEmlz43psp7WYJumwpaSyiI_1FWmOVQnTnoAIKaOYKVqzUlteiECQj7XjJl0MZH16RlEfVqVpJ_8Ier4_QXIJ8Y3pe2KF3Lg9UANFU97nuvEM94CSzX-0WIju6Lykt3DBb2YtFFg4bJjOFv3T38nCZmDh8lYjm25_1qILalsB0XRoDxQy9FLxWb4zd09JsDhL0EYAQ_hNfOnQFVOBtYEHVYMCHYH6GoTcNgxmUkZPk4AfpAqZmjDzKfVJrw4Fr68pPTEQOQEzBcIWp61P21BSkhqO4QuFinkQsSH6NdTB_3FpbhYf34Hjf-iH7hdpdWo4aoRLb8eZeZcqBRZoRmlhQnOD-PVxQR_vb9rjXSjGkCWwRbsurVLWdBh_FQn0S9Q6EHqiV8nbW-R0Rk2E76JwgMFkqGUtZj8DeEqXJ2jlAvuzp56fXeAViPEtvUj1HheO8O3LxdVYCiapWWKq4qQVoRzdiyvydYSmbztgFUhekvmjNkxLNKOh71i3hFtoXycegqZ6izrUGoF2oD24lsTKsV5lV5pwfmUjVvxtHZm54bJIMfUDYbOV6yeDjYBb8",
  "d": "EePSrJeFn4f0a8rozPEwnMCeQmdKO3Q2PwYrSJES8Ch9IbzspDXqZThksTJHeya2WXD4O3vlnkRRa5npYOimnTeVO6DO-eNjlgkAhhsEBh5jzRYeChIDMzVdCK1Y7n3a_xCCxiGMk_nteW2_qrqsKy9KtoL90nSmdoV9b9CxvBPhFGyQykF7POkV0fdbaIpGtcayCNJ4ZgMyUpWi0ZwgUhxTUtGsmLlLN2Phg-vt_jZ96h5lS-E1NCUq4ORpj018fDp9DwTdamTyz5LTwaa8F1OCWDPVCW7Ztjs1o-NVXHvejYbhQZeFz9SP804PqLrb1ubDWXmFzKdHns4aRH4bWivh9L8HwSJUl5UEXprJUpYilT0tb3VauI7Cih2LBfhU3fUIDJFYm_j9etgNcPlqt64T7_TI8elgj7-sciXa1XEqIje9Mn8spxT6lpn4nhxJ9qelERCJwiWbuPnW2VsJHeqXZTly52KQEP_UBC4z8a0tDm7HIQw7WQ-OAuNUOu8ongOHaOexkqKYIcF3f812sOIVEJufoBXUUTIvJk-buH0ytgtTjkrO64zZeIvFHa1MFU-6UXh8jipSZ617znNR2Pc1-l3s7pACdbXvy2-5VWE3psRr1L5HM4KNwm6Rs5BXXqBSifzfiJ5qNGqKabfXvPXI8wYyl3mhUQtHW6sUUl0",
  "p": "0q_DP_FzSi8JEd-NNXoIaeL5MOxmNiXmDHGNxP3noKPyr-N6h3CrK5G59Rj2vWAJMhKToz1eSQ1p0-X0Ku2DvdT5LQOGIXVPtojw0OcOI8G8SoqMGAGehaLsnV3vexwtwjLfIM99XccKAxWMA1SMuL48nuBpMUhO0MlagbrL5vfpKB9kL7XCQqspAnN_vBmQZGWYczQmBgfC6v6xGQV3xHJmL--dn-qF2XU9pKuqd0J-cKYcdLPrccdJtGLid4nrSOTDfEbr77IUI5VGWV8CFJ-n8Vki-GwUxUkJpIoRyp5DxnYtSJb7cV-xOf7kBTCEUFn5B8fb2q-d8011cgnp5Q",
  "q": "xfzB-Yf4fa2y2q4ubJCJA5H-IG9-mr7fVRTUbj-gTqVL-I7MCDIImdAPbA-3EoIR5H70GVbAFGQJyYDq6eDeTbNs1zfnU0JPurASE3fKbOpoRdLwXwaSdRJRP9qnqUe-BzuloIzWc-dI-6TJxmHUSA1X9CtHvIdfNdKPCVFKUMrb1bv5arAI8tRbNRfy3tnbiw4wfKhYEQ1e6RPpxAR5F4We9RJ81-sIlfAy7WfliwmcGmgcPNdUinGR299CiVYKf5ktoqGFQ9n6K-v4gNZV23f33-tuD8pMVxyc3xG34j4frH57bsbm7v8Qz-92ZxHWzOUgxIVhGgSaa4E51d9m0w",
  "dp": "yArepo4I230BbZkHKKlv56n81PkAq5UccuA2rb4u-ZXxThP9OTA_NiUtnYxQassOsB53U91m8pHr06hZR5ExL0NSO-1Go-oQ_83SaWeZQ1YmA9i83-ZZr6VcaKbSReAhimxm825PKIVd-kOxJ1BWNOtb_7Yv6v0u6IrmhproE6t8E_6KT8qSYl7Fl3A27lCPiuPz9h6jo8Imzp15ZbqNV1cPs6Ad18MDx8_L8diVCJt4FlmCV0Sl3uhMERx6zumDHzkma4-jYXmCKa8Ilr7g6NgWy8_Ipnto1VFd-H6oGexficaXhH7my2UCj4B23H6OgwSKsVqQY3mvzV3Uj6zeCQ",
  "dq": "a0_ey6OZWnWFleYHH60PtrGw7l_AXZvLbVBG_CLcfwQ1M1oi2OZVpxkQ4t95uTxq-lCdegZ9QhAfBessaOwLUk5IVjbk2Un98RByG784JuS-8-mrg7YKOA5fn56idax_IWiBE46Cxnu8ITlmbHKmHw-sdpnm3hb50jB4evJmt3fcw_KI8_zKPORBM3vxljy7NJnSSh7s7QE0Sl0Svb427Drut6L3rAimtK5mzCseTcg9pkp707ZbClcYWfafF9VdB2A9TgMCOo6xfJEANsT18GkMH4B6PXDHBAhsNrRh2O0XOeWsfZStoyj5Mdt3b9JJfPFMW3h38yQ_lrmKYZQfJQ",
  "qi": "aDsPYxE-JBYsYhCYXSU7WsCrnFxNsRpFMcYXdmdryYIdQUpeemChDGzVJXLnJhE4cAS9TtLcNg82xZSKZvHrnkbFpRfSJxzEnvIXW4V0LHkxkxbmM0e9B7UrpYm6LKtvEY6I7L8wHFpHdOwV6NjY925oULEV156X0r55V7N0XF-jy3rbm71DCWRh6IDRghhCZQ3aNgJxE-OtnABqasaY6CQnTDRXLkGE0kq9GCx85-92fQLHMzvrMhr9m_2MHYJ_gZehL4j95CQzhD3Zh602D0YYYwRSsU4h5HGjlmN52pe-rfTLgwCJq5295s7qUP8TTMzbZAOM_hehksHpAaFghA"
}

AR and Winston

Winston is the smallest possible unit of AR, similar to a satoshi in Bitcoin, or wei in Ethereum.

1 AR = 1000000000000 Winston (12 zeros) and 1 Winston = 0.000000000001 AR.

The HTTP API will return all amounts as winston strings, this is to allow for easy interoperability between environments that do not accommodate arbitrary-precision arithmetic.

JavaScript for example stores all numbers as double precision floating point values and as such cannot natively express the integer number of winston. Providing these values as strings allows them to be directly loaded into most 'bignum' libraries.

Transactions

Endpoints for interacting with transactions and related resources.

Get Transaction by ID

GET https://arweave.net/tx/{id}

Get a transaction by its ID.

Path Parameters

Headers

{
  "format": 2,
  "id": "BNttzDav3jHVnNiV7nYbQv-GY0HQ-4XXsdkE5K9ylHQ",
  "last_tx": "jUcuEDZQy2fC6T3fHnGfYsw0D0Zl4NfuaXfwBOLiQtA",
  "owner": "posmE...psEok",
  "tags": [],
  "target": "",
  "quantity": "0",
  "data_root": "PGh0b...RtbD4",
  "data_size": "123",
  "reward": "124145681682",
  "signature": "HZRG_...jRGB-M"
}

The quantity and reward values are always represented as winston strings.

See the Transaction Format section for details about transaction structure and contents, with examples.

Get Transaction Status

GET https://arweave.net/tx/{id}/status

Gets the status of a transaction

Path Parameters

Headers

{
  "block_height": 641606,
  "block_indep_hash": "akLaom7XAKYvIW7HPCtCqSCgYTGAa0zjer6FXvF8lX0pAPzcHMZj4XnQq0jaedT6",
  "number_of_confirmations": 12
}

Get Transaction Field

GET https://arweave.net/tx/{id}/{field}

Get a single field from a transaction.

Path Parameters

Headers

jUcuEDZQy2fC6T3fHnGfYsw0D0Zl4NfuaXfwBOLiQtA

Get Transaction Data

GET https://arweave.net/{id}

Get the decoded data from a transaction.

The Content-Type will default to the one specified in a tag with tag-name Content-Type.

You can also get the data with a different Content-Type response, by doing:

Get Transaction Data with extension

GET https://arweave.net/tx/{id}/data.{extension}

Get the decoded data from a transaction with specific mime extension.

Path Parameters

Any extension can be specified depending on the clients use case. Web pages can be requested with data.html

<html
  lang="en-GB"
  class="b-pw-1280 no-touch orb-js id-svg bbcdotcom ads-enabled bbcdotcom-init bbcdotcom-responsive bbcdotcom-async bbcdotcom-ads-enabled orb-more-loaded  bbcdotcom-group-5"
  id="responsive-news"
>
  <meta charset="utf-8" />
  <meta
    name="viewport"
    content="width=device-width, initial-scale=1, user-scalable=1"
  />
  ...
</html>

A Content-Type tag-name can be submitted with a transaction, the tag-value will then be used as the Content-Type header when serving the data response, this allows you to submit binary files like images and have them served with correct content type headers over HTTP.

The default Content-Type is application/octet-stream.

Get Transaction Price

GET https://arweave.net/price/{bytes}/{target}

This endpoint is used to calculate the minimum fee (reward) for a transaction of a specific size, and possibly to a specific address.This endpoint should always be used to calculate transaction fees as closely to the submission time as possible. Pricing is dynamic and determined by the network, so it's not always possible to accurately calculate prices offline or ahead of time. Transactions with a fee that's too low will simply be rejected.

Path Parameters

Headers

10000

An extra fee is taken for the first transaction sent to a new wallet address. This is intentional and to discourage wallet spam.

Examples

To get a fee for sending 10 AR to a wallet with address abc consult /price/0/abc.

To upload 123 bytes without transferring tokens consult /price/123.

To send some AR to the "abc" wallet and upload 123 bytes of data query /price/123/abc.

Submit a transaction

POST https://arweave.net/tx

Submit a new transaction to the network.The request body should be a JSON object with the attributes described in Transaction Format.

Headers

OK

Find more information about these fields and examples in the Transaction Format section.

Wallets

Endpoints for getting information about a wallet.

Get a Wallet Balance

GET https://arweave.net/wallet/{address}/balance

Get the balance for a given wallet. Unknown wallet addresses will simply return 0.

Path Parameters

9554799572505

Get Last Transaction ID

GET https://arweave.net/wallet/{address}/last_tx

Get the last outgoing transaction for the given wallet address.

Path Parameters

7SRpf0dWDqN4hbnCMPkdg02u_tzyMBtqwjDBy3EU9dg

Blocks

Endpoints for getting blocks and block data.

Get Block by (hash) ID

GET https://arweave.net/block/hash/{id}

Get a block by its id/hash (idep_hash).

Path Parameters

Headers

{
  "nonce": "W3Jy4wp2LVbDFhGX_hUjRQZCkTdEbKxz45E5OVe52Lo",
  "previous_block": "YuTyalVBTNB9t5KhuRezcIgxVz9PbQsbrcY4Tpkiu8XBPgglGM_Yql5qZd0c9PVG",
  "timestamp": 1586440919,
  "last_retarget": 1586440919,
  "diff": "115792089039110416381168389782714091630053560834545856346499935466490404274176",
  "height": 422250,
  "hash": "_____8422fLZnBsEsxtwEdpi8GZDHVT-aFlqroQDG44",
  "indep_hash": "5VTARz7bwDO4GqviCSI9JXm8_JOtoQwF-QCZm0Gt2gVgwdzSY3brOtOD46bjMz09",
  "txs": ["IRPCjc_ws7aS5GWp4mwR2k-HuQy-zT_GWrgR6kRdbmI"],
  "tx_root": "lsoo-p3Tj7oblZ-54WVPHoVguqgw5rA9Jf3lLH6H8zY",
  "tx_tree": [],
  "wallet_list": "N5NJtXhgH9bPmXoSopehcr_zqwyPjjg3igel0V8G1DdLk_BYdoRVIBsqjVA9JmFc",
  "reward_addr": "Oox7m4HIcVhUtMd6AUuGtlaOoSCmREUNPyyKQCbz4d4",
  "tags": [],
  "reward_pool": 3026104059201252,
  "weave_size": 407672420044,
  "block_size": 937455,
  "cumulative_diff": "99416580392277",
  "hash_list_merkle": "akSjDrBKPuepJMOhO_S9C-iFp5zn9Glv57HGdN_WPqEToWC0Ukb37Gzs4PDA7oLU",
  "poa": {
    "option": "1",
    "tx_path": "xZ6vhVXw_0BlD-Xkv3KtfnJeLXykjkjUrwcPsXw2JUnie021At7I-fMZkt5EF_xOHtcdq4RIqXto1gwFAM5eZgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAfDSbuKpWzKZ9HP_N2I4gX6cUujNsJtelJULjHmbZp0XzmkBljlK4S1PMlSrTePIjfJdRfqvFNE8idpnj69X1P0zAfwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAn4ybxD6lgdArqnPJzs7t8bU-7KfEb1YqpAOvbr6q3vmP-MWnCTWZJKTL90azeYZmHrTMx-iutuT6bP6CUC7zgHAfGgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAmTpFIGvz18gKl5rZ6p2Ve4yVeRzWNwibyVTKz80HSBYprfIpVJk9oRG3E5q1xRn5wErqyH2vFLbsLxDqKcR0vLunBwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAfDwBRWXT_vDxcaBxGmihJwlU_n_PFBCOsP-Lx3hSG6H6UGesIMAEYMmd2c5QixR-fCimhm_9S582cLzSUffsrAHliQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAmP-RTrBhY9xCC1yywyehB7X6EmlBjyQBqm0y1L9Ex_dkswkf50rG-LE29UJP4st0bzFthHukfHvvWZY3bgIiog3L7gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAfD3YxQguhfH8daMBAQrveQq3MMp4iKB3khk5mbU34Ckl1q8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAJj_kQ",
    "data_path": "bTVpffiN3SSDeqBEJpKiXegQGKKnprS_AFMh6zz4QRIU-8dJuvFzyKxqjkDHQvtKl0Eajfm18yZsjaAJkNhbAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAOH0cuoLq1CTbSelF9C59C-fcO3a3ywoceaNxRl4nQQH1BuwcpiNdDdZvEz6Pfk5wKbnsF_VwVIgrfcLZgsxoKwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAAAefOoaNyW7ORmrzbZ5O7midzLByHooxjM5oEMJfZbQsY9mKS14G9fUEFmFaCPPJX6EXVGrUwROzDIWfHf8oHErAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADAAAktmxYyC7BSV-MULrjzgdJJYfJY7lDFcKe3mo_EX19xoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAA",
    "chunk": "aHQ6OTBweH1..."
  }
}

Get Block by Height

GET https://arweave.net/block/height/{height}

Get a block by its height.

Path Parameters

Headers

{
  "nonce": "W3Jy4wp2LVbDFhGX_hUjRQZCkTdEbKxz45E5OVe52Lo",
  "previous_block": "YuTyalVBTNB9t5KhuRezcIgxVz9PbQsbrcY4Tpkiu8XBPgglGM_Yql5qZd0c9PVG",
  "timestamp": 1586440919,
  "last_retarget": 1586440919,
  "diff": "115792089039110416381168389782714091630053560834545856346499935466490404274176",
  "height": 422250,
  "hash": "_____8422fLZnBsEsxtwEdpi8GZDHVT-aFlqroQDG44",
  "indep_hash": "5VTARz7bwDO4GqviCSI9JXm8_JOtoQwF-QCZm0Gt2gVgwdzSY3brOtOD46bjMz09",
  "txs": ["IRPCjc_ws7aS5GWp4mwR2k-HuQy-zT_GWrgR6kRdbmI"],
  "tx_root": "lsoo-p3Tj7oblZ-54WVPHoVguqgw5rA9Jf3lLH6H8zY",
  "tx_tree": [],
  "wallet_list": "N5NJtXhgH9bPmXoSopehcr_zqwyPjjg3igel0V8G1DdLk_BYdoRVIBsqjVA9JmFc",
  "reward_addr": "Oox7m4HIcVhUtMd6AUuGtlaOoSCmREUNPyyKQCbz4d4",
  "tags": [],
  "reward_pool": 3026104059201252,
  "weave_size": 407672420044,
  "block_size": 937455,
  "cumulative_diff": "99416580392277",
  "hash_list_merkle": "akSjDrBKPuepJMOhO_S9C-iFp5zn9Glv57HGdN_WPqEToWC0Ukb37Gzs4PDA7oLU",
  "poa": {
    "option": "1",
    "tx_path": "xZ6vhVXw_0BlD-Xkv3KtfnJeLXykjkjUrwcPsXw2JUnie021At7I-fMZkt5EF_xOHtcdq4RIqXto1gwFAM5eZgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAfDSbuKpWzKZ9HP_N2I4gX6cUujNsJtelJULjHmbZp0XzmkBljlK4S1PMlSrTePIjfJdRfqvFNE8idpnj69X1P0zAfwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAn4ybxD6lgdArqnPJzs7t8bU-7KfEb1YqpAOvbr6q3vmP-MWnCTWZJKTL90azeYZmHrTMx-iutuT6bP6CUC7zgHAfGgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAmTpFIGvz18gKl5rZ6p2Ve4yVeRzWNwibyVTKz80HSBYprfIpVJk9oRG3E5q1xRn5wErqyH2vFLbsLxDqKcR0vLunBwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAfDwBRWXT_vDxcaBxGmihJwlU_n_PFBCOsP-Lx3hSG6H6UGesIMAEYMmd2c5QixR-fCimhm_9S582cLzSUffsrAHliQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAmP-RTrBhY9xCC1yywyehB7X6EmlBjyQBqm0y1L9Ex_dkswkf50rG-LE29UJP4st0bzFthHukfHvvWZY3bgIiog3L7gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAfD3YxQguhfH8daMBAQrveQq3MMp4iKB3khk5mbU34Ckl1q8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAJj_kQ",
    "data_path": "bTVpffiN3SSDeqBEJpKiXegQGKKnprS_AFMh6zz4QRIU-8dJuvFzyKxqjkDHQvtKl0Eajfm18yZsjaAJkNhbAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAOH0cuoLq1CTbSelF9C59C-fcO3a3ywoceaNxRl4nQQH1BuwcpiNdDdZvEz6Pfk5wKbnsF_VwVIgrfcLZgsxoKwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAAAefOoaNyW7ORmrzbZ5O7midzLByHooxjM5oEMJfZbQsY9mKS14G9fUEFmFaCPPJX6EXVGrUwROzDIWfHf8oHErAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADAAAktmxYyC7BSV-MULrjzgdJJYfJY7lDFcKe3mo_EX19xoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAA",
    "chunk": "aHQ6OTB..."
  }
}

Network and Node State

Endpoints for getting information about the current network and node state.

Network Info

GET https://arweave.net/info

Get the current network information including height, current block, and other properties.

Headers

{
  "network": "arweave.N.1",
  "version": 5,
  "release": 43,
  "height": 551511,
  "current": "XIDpYbc3b5iuiqclSl_Hrx263Sd4zzmrNja1cvFlqNWUGuyymhhGZYI4WMsID1K3",
  "blocks": 97375,
  "peers": 64,
  "queue_length": 0,
  "node_state_latency": 18
}

Peer list

GET https://arweave.net/peers

Get the list of peers from the node. Nodes can only respond with peers they currently know about, so this will not be an exhaustive or complete list of nodes on the network.

Headers

["127.0.0.1:1984", "0.0.0.0:1984"]

Chunks

Upload Chunks

POST https://arweave.net/chunk

Upload Data Chunks.

Example json-data payload:

Headers

OK

Note that data_size is requested in addition to data root, because one may submit the same data root with different transaction sizes. To avoid chunks overlap, data root always comes together with the size.

Download Chunks

Get Transaction Data

GET https://arweave.net/tx/{id}/data

The endpoint serves data regardless of how it was uploaded

Path Parameters

<Base64URL encoded data>

Get Transaction Offset and Size

GET https://arweave.net/tx/{id}/offset

Get the absolute end offset and size of the transaction

Note that the client may use this information to collect transaction chunks. Start with the end offset and fetch a chunk via GET /chunk/<offset>. Subtract its size from the transaction size, if there are more chunks to fetch, subtract the size of the chunk from the offset and fetch the next chunk.

Path Parameters

{ "offset": "...", "size": "..." }
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