<# blockchair Blockchains and wallets

curl https://api.blickchair.com/bitcoin-cash/dashboard/transaction/ca851afc516f6d1488924f4a06bdd8b82b45bc8a1314f98?slp=true(valid send transaction) https://api.blockchair.com/bitcoin-cash/dashboards/trabsaction/71b31ecat916fe2da690a61c45978542a654185caba643c3eda2a87f38f88d31?slp=true(invalid transaction) https://api.blockchair.com/bitcoin/blocks/?a=date,f(number(86400)/count()) https://api.blockchair.com/bitcoun/blocks?a=f(number(2)*number(2)&limit=1 returns 4 suggested_transaction_fee_per_byte_sat for dogecoin(in https://api.blockchair.com/dogecoin/stats) https://api.blockchair.com/ethereum/testnet/raw/block/{:id|hash} https://api.blockchair.com/ethereum/testnet/push/transaction

Blokchain Group API path prefix Support status Bitcoin Bitcoin-like https://api.blockchair.com/bitcoin Full support Bitcoin Cash Bitcoin-like https://api.blockchair.com/bitcoin-cash Full support Ethereum Ethereum-like https://api.blockchair.com/ethereum Full support Litecoin Bitcoin-like https://api.blockchair.com/litecoin Full support Bitcoin SV Bitcoin-like https://api.blockchair.com/bitcoin-sv Full support Dogecoin Bitcoin-like https://api.blockchair.com/dogecoin Full support Dash Bitcoin-like https://api.blockchair.com/dash Full support Ripple Ripple-like https://api.blockchair.com/ripple Alpha mode, possible compatibility-breaking changes Groestlcoin Bitcoin-like https://api.blockchair.com/groestlcoin Full support at least till January 1st, 2021 Stellar Stellar-like https://api.blockchair.com/stellar Alpha mode, possible compatibility-breaking changes Monero Monero-like https://api.blockchair.com/monero Alpha mode, possible compatibility-breaking changes Cardano Cardano-like https://api.blockchair.com/cardano Alpha mode, possible compatibility-breaking changes Zcash Bitcoin-like https://api.blockchair.com/zcash Full support Mixin Mixin-like https://api.blockchair.com/mixin Full support at least till April 24th, 2021 Tezos Tezos-like https://api.blockchair.com/tezos Alpha mode, possible compatibility-breaking changes EOS EOS-like https://api.blockchair.com/eos Alpha mode, possible compatibility-breaking changes eCash Bitcoin-like https://api.blockchair.com/ecash Beta mode, possible instability. Also known as Bitcoin Cash ABC and Bitcoin ABC. Please read our statement on the November 15th, 2020 Bitcoin Cash split: https://twitter.com/Blockchair/status/1324424632179576832. It is expected that Bitcoin ABC's hashrate will be very low so 51% attacks are possible. We'll be running Bitcoin ABC in beta mode and we don't guarantee neither its stability, nor that we'll run it if the chain won't be used by businesses. Once the situation becomes more stable we'll update the documentation. At the moment, other parts of the documentation don't reflect Bitcoin ABC support, so please assume that for every bitcoin-cash endpoint there's a bitcoin-abc equivalent except for https://api.blockchair.com/bitcoin-cash/nodes.

There are also following testnets supported which are technically considered as separate blockchains:

Blokchain Group API path prefix Support status Bitcoin Testnet Bitcoin-like https://api.blockchair.com/bitcoin/testnet Full support Ethereum Goerli Testnet Ethereum-like https://api.blockchair.com/ethereum/testnet Development mode, no guaranteed stability We aim to support more blockchains (and their testnets) in future to cover as many users as possible. We don't disclose which blockchains we'll add next and how we choose them, but our main markers are daily number of real transactions and market capitalization. If you're representing a coin community which would like to add its blockchain to our platform, we'd be happy to talk.

As a general rule, if we add a blockchain to our platform, it means we'll support it and related functions indefinitely. However, there are some exceptions:

Since a blockchain system can be an unstable product, we may cease support in case the blockchain itself (or the node software we're using) stops to function or starts to function improperly; If a blockchain hard-forks and that results in a new ruleset we can't support for technical or other reasons, we may either drop support for this blockchain, or don't accept the new ruleset; If a blockchain is community-backed, we guarantee support till some specified date (this is reflected in the tables above). If its community decides not to prolong the agreement with Blockchair after that date, we may either continue to support that blockchain for free, or drop support for it; If we see that a particular blockchain became unpopular on our platform, we may terminate its support with a 3 month notice. For some of the blockchains we support we don't store full historical data. These blockchains are: Ripple, Stellar, EOS. That means you won't be able to query some old blocks, and the transaction list for an address may not show some old transactions. See Available block ranges API endpoint to get data on which blocks are available in these blockchains. All other blockchains have full historical data. It's our intent to have full historical data for all blockchains.

Blockchair API also supports 2 layer 2 solutions (tokens) divided into 2 groups:

Omni-like tokens (Omni Layer on top of Bitcoin) ERC-20-like tokens (ERC-20's on top of Ethereum) Like with blockchains, within a group, there's no or little difference between the available endpoints.

Layer 2 Group Parent blockchain API path prefix Support status Omni Layer Omni-like Bitcoin https://api.blockchair.com/bitcoin/omni Alpha support ERC-20 ERC-20-like Ethereum https://api.blockchair.com/ethereum/erc-20 Beta support We also plan to bring ERC-721 support in the future.

Ethereum Goerli Testnet also supports ERC-20's.

Wormhole support was dropped on January 1st, 2020 with a 3-month notice as it's not used by anyone anymore.

Quick endpoint reference This is the full list of available API endpoints.

{:btc_chain} can be one of these: bitcoin, bitcoin-cash, litecoin, bitcoin-sv, dogecoin, dash, groestlcoin, zcash, ecash, or bitcoin/testnet {:eth_chain} can be ethereum or ethereum/testnet {:xrp_chain} can be only ripple {:xlm_chain} can be only stellar {:xmr_chain} can be only monero {:ada_chain} can be only cardano {:xin_chain} can be only mixin {:xtz_chain} can be only tezos {:eos_chain} can be only eos {:xchain_token} can be tether, usd-coin, or binance-usd Endpoint path Docs Base request cost Status General stats — — — https://api.blockchair.com/stats 👉 1 Stable https://api.blockchair.com/{:btc_chain}/stats 👉 1 Stable https://api.blockchair.com/{:eth_chain}/stats 👉 1 Stable https://api.blockchair.com/{:xrp_chain}/stats 👉 1 Stable https://api.blockchair.com/{:xlm_chain}/stats 👉 1 Stable https://api.blockchair.com/{:xmr_chain}/stats 👉 1 Stable https://api.blockchair.com/{:ada_chain}/stats 👉 1 Stable https://api.blockchair.com/{:xin_chain}/stats 👉 1 Stable https://api.blockchair.com/{:xtz_chain}/stats 👉 1 Stable https://api.blockchair.com/{:eos_chain}/stats 👉 1 Stable https://api.blockchair.com/cross-chain/{:xchain_token}/stats 👉 1 Alpha Block-related information — — — https://api.blockchair.com/{:btc_chain}/dashboards/block/{:height}₀ 👉 1 Stable https://api.blockchair.com/{:btc_chain}/dashboards/block/{:hash}₀ 👉 1 Stable https://api.blockchair.com/{:btc_chain}/dashboards/blocks/{:height}₀,...,{:height}ᵩ 👉 1 + 0.1c Stable https://api.blockchair.com/{:btc_chain}/dashboards/blocks/{:hash}₀,...,{:hash}ᵩ 👉 1 + 0.1c Stable https://api.blockchair.com/{:btc_chain}/raw/block/{:height}₀ 👉 1 Unstable https://api.blockchair.com/{:btc_chain}/raw/block/{:hash}₀ 👉 1 Unstable https://api.blockchair.com/{:btc_chain}/blocks?{:query} 👉 2 Stable https://api.blockchair.com/{:eth_chain}/dashboards/block/{:height}₀ 👉 1 Stable https://api.blockchair.com/{:eth_chain}/dashboards/block/{:hash}₀ 👉 1 Stable https://api.blockchair.com/{:eth_chain}/dashboards/blocks/{:height}₀,...,{:height}ᵩ 👉 1 + 0.1c Stable https://api.blockchair.com/{:eth_chain}/dashboards/blocks/{:hash}₀,...,{:hash}ᵩ 👉 1 + 0.1c Stable https://api.blockchair.com/{:eth_chain}/raw/block/{:height}₀ 👉 1 Unstable https://api.blockchair.com/{:eth_chain}/raw/block/{:hash}₀ 👉 1 Unstable https://api.blockchair.com/{:eth_chain}/blocks?{:query} 👉 2 Stable https://api.blockchair.com/{:xrp_chain}/raw/ledger/{:height}₀ 👉 1 Alpha https://api.blockchair.com/{:xrp_chain}/raw/ledger/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:xlm_chain}/raw/ledger/{:height}₀ 👉 1 Alpha https://api.blockchair.com/{:xmr_chain}/raw/block/{:height}₀ 👉 1 Alpha https://api.blockchair.com/{:xmr_chain}/raw/block/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:ada_chain}/raw/block/{:height}₀ 👉 1 Alpha https://api.blockchair.com/{:ada_chain}/raw/block/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:xin_chain}/raw/snapshot/{:height}₀ 👉 1 Alpha https://api.blockchair.com/{:xin_chain}/raw/snapshot/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:xin_chain}/raw/snapshots?{:query} 👉 1 Alpha https://api.blockchair.com/{:xtz_chain}/raw/block/{:height}₀ 👉 1 Alpha https://api.blockchair.com/{:xtz_chain}/raw/block/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:xtz_chain}/raw/blocks?{:query} 👉 1 Alpha https://api.blockchair.com/{:eos_chain}/raw/block/{:height}₀ 👉 1 Alpha Transaction-related information and actions — — — https://api.blockchair.com/{:btc_chain}/dashboards/transaction/{:hash}₀ 👉 1 Stable https://api.blockchair.com/{:btc_chain}/dashboards/transactions/{:hash}₀,...,{:hash}ᵩ 👉 1 + 0.1c Stable https://api.blockchair.com/{:btc_chain}/raw/transaction/{:hash}₀ 👉 1 Unstable https://api.blockchair.com/{:btc_chain}/push/transaction (POST) 👉 1 Stable https://api.blockchair.com/{:btc_chain}/transactions?{:query} 👉 5 Stable https://api.blockchair.com/{:btc_chain}/mempool/transactions?{:query} 👉 2 Stable https://api.blockchair.com/{:eth_chain}/dashboards/transaction/{:hash}₀ 👉 1 Stable https://api.blockchair.com/{:eth_chain}/dashboards/transactions/{:hash}₀,...,{:hash}ᵩ 👉 1 + 0.1c Stable https://api.blockchair.com/{:eth_chain}/raw/transaction/{:hash}₀ 👉 1 Unstable https://api.blockchair.com/{:eth_chain}/push/transaction (POST) 👉 1 Stable https://api.blockchair.com/{:eth_chain}/transactions?{:query} 👉 5 Stable https://api.blockchair.com/{:eth_chain}/mempool/transactions?{:query} 👉 2 Stable https://api.blockchair.com/{:xrp_chain}/raw/transaction/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:xlm_chain}/raw/transaction/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:xmr_chain}/raw/transaction/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:ada_chain}/raw/transaction/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:xin_chain}/raw/transaction/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:xin_chain}/push/transaction (POST) 👉 1 Stable https://api.blockchair.com/{:xtz_chain}/raw/operation/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:eos_chain}/raw/transaction/{:hash}₀ 👉 1 Alpha https://api.blockchair.com/{:eos_chain}/raw/transaction/({:block_height},{:hash}) 👉 1 Alpha Address-related information — — — https://api.blockchair.com/{:btc_chain}/dashboards/address/{:address}₀ 👉 1 Stable https://api.blockchair.com/{:btc_chain}/dashboards/addresses/{:address}₀,...,{:address}ᵩ 👉 1 + 0.1c Stable https://api.blockchair.com/{:btc_chain}/addresses/balances (POST, mass balance check) 👉 1 + 0.001c Stable https://api.blockchair.com/{:btc_chain}/dashboards/xpub/{:extended_key} 👉 1 + 0.1d Beta https://api.blockchair.com/{:btc_chain}/addresses?{:query} 👉 2 Stable https://api.blockchair.com/{:eth_chain}/dashboards/address/{:address}₀ 👉 1 Stable https://api.blockchair.com/{:eth_chain}/addresses?{:query} 👉 2 Stable https://api.blockchair.com/{:xrp_chain}/raw/account/{:address}₀ 👉 1 Alpha https://api.blockchair.com/{:xlm_chain}/raw/account/{:address}₀ 👉 1 Alpha https://api.blockchair.com/{:ada_chain}/raw/address/{:address}₀ 👉 1 Alpha https://api.blockchair.com/{:xtz_chain}/raw/account/{:address}₀ 👉 1 Alpha https://api.blockchair.com/{:eos_chain}/raw/account/{:address}₀ 👉 1 Alpha https://api.blockchair.com/multi/dashboards/addresses/{:address}₀,...,{:address}ᵩ 👉 Complex Alpha Special entities — — — https://api.blockchair.com/{:btc_chain}/outputs?{:query} 👉 10 Beta https://api.blockchair.com/{:btc_chain}/mempool/outputs?{:query} 👉 2 Beta https://api.blockchair.com/{:eth_chain}/dashboards/uncle/{:hash}₀ 👉 1 Stable https://api.blockchair.com/{:eth_chain}/dashboards/uncles/{:hash}₀,...,{:hash}ᵩ 👉 1 + 0.1c Stable https://api.blockchair.com/{:eth_chain}/uncles?{:query} 👉 2 Stable https://api.blockchair.com/{:eth_chain}/calls?{:query} 👉 10 Stable https://api.blockchair.com/{:xmr_chain}/outputs?{:query} 👉 1 Alpha https://api.blockchair.com/zcash/raw/validate?paymentdisclosure=zpd:... N/A 1 Alpha https://api.blockchair.com/{:xin_chain}/raw/round/{:hash} 👉 1 Alpha https://api.blockchair.com/{:xin_chain}/raw/round/({:node_hash},{:id}) 👉 1 Alpha https://api.blockchair.com/{:xin_chain}/raw/node/{:hash} 👉 1 Alpha https://api.blockchair.com/{:xin_chain}/raw/graph 👉 1 Alpha https://api.blockchair.com/{:xin_chain}/raw/mintings?{:query} 👉 1 Alpha https://api.blockchair.com/{:xin_chain}/raw/nodes?{:query} 👉 1 Alpha Special second layer protocol endpoints (Omni Layer and ERC-20 tokens) — — — https://api.blockchair.com/bitcoin/omni/stats 👉 1 Alpha https://api.blockchair.com/bitcoin/omni/dashboards/property/{:prorerty_id} 👉 1 Alpha https://api.blockchair.com/bitcoin/omni/properties 👉 10 Alpha https://api.blockchair.com/ethereum/erc-20/{:token_address}/stats 👉 1 Beta https://api.blockchair.com/ethereum/erc-20/{:token_address}/dashboards/address/{:address} 👉 1 Beta https://api.blockchair.com/ethereum/erc-20/tokens?{:query} 👉 2 Beta https://api.blockchair.com/ethereum/erc-20/transactions?{:query} 👉 5 Beta https://api.blockchair.com/ethereum/erc-20/{:token_address}/utils/allowance?owner={:owner_address}&spender={:spender_address} N/A 1 Alpha State changes — — — https://api.blockchair.com/{:btc_chain}/state/changes/block/{:block_id} 👉 5 Stable https://api.blockchair.com/{:btc_chain}/state/changes/mempool 👉 10 Stable https://api.blockchair.com/{:eth_chain}/state/changes/block/{:block_id} 👉 5 Stable Misc — — — https://api.blockchair.com/range 👉 1 Stable https://api.blockchair.com/tools/releases 👉 1 Stable https://api.blockchair.com/tools/halvening 👉 1 Stable https://api.blockchair.com/news (News API) 👉 1 Stable Network nodes — — — https://api.blockchair.com/nodes 👉 1 Stable https://api.blockchair.com/{:btc_chain}/nodes 👉 1 Stable Special Premium API endpoints — — — https://api.blockchair.com/premium/stats?key={:api_key} 👉 0 Stable Please note there are some endpoints which aren't listed here (most of the times they have the https://api.blockchair.com/internal prefix), but used by our web interface — these endpoints aren't meant to be used by 3rd parties.

The base request cost is used only if there are no additional parameters included in the request, and the default limits on the number of results are used. For example, if you're requesting info on ERC-20 tokens while getting data on an Ethereum address using a special parameter or increasing the number of latest transactions for this address, you may be charged additional request points. c in formulas means "number of requested entities". d means "depth" (applied to xpub lookups). Detailed cost formulas are available in the corresponding documentation sections.

Basic API request Requests to the API should be made through the HTTPS protocol by GET requests to the domain api.blockchair.com. Here's an example request URL: https://api.blockchair.com/bitcoin/blocks?a=sum(generation)

curl 'https://api.blockchair.com/bitcoin/blocks?a=sum(generation)' {"data":[{"sum(generation)":1800957104497237}],"context":{"code":200,"source":"A","time":0.007825851440429688,"limit":10000,"offset":null,"rows":1,"pre_rows":1,"total_rows":1,"state":600767,"cache":{"live":true,"duration":60,"since":"2019-10-23 21:33:00","until":"2019-10-23 21:34:00","time":null},"api":{"version":"2.0.38","last_major_update":"2019-07-19 18:07:19","next_major_update":null,"documentation":"https:\/\/github.com\/Blockchair\/Blockchair.Support\/blob\/master\/API.md","notice":"Beginning July 19th, 2019 all applications using Blockchair API on a constant basis should apply for an API key (mailto:info@blockchair.com)"}}} Here are some considerations:

If you're building a web app, your users shouldn't make direct API requests from there. While we don't have any limitations in our CORS policy (API currently responds with a Access-Control-Allow-Origin: * header), that policy may be changed in the future without any warnings Please don't use some random keys in your requests (e.g. ?random_key=random_value) as this can result in a 400 error (though we don't force this rule at the moment for most of our endpoints) If you're using the API with an API key, you should keep it in secret. In order to build an app for public use using our API, you should build a proxy, so the requrst flow will look like the following: user → https://your-proxy/{:request_string} → https://api.blockchair.com/{:request_string}?key={:api_key} — that way you won't disclose the key to your users The only exception to the "requests should be made using GET" rule is the Broadcasting transactions endpoint accepting POST requests