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Add faq: why timestamps don't always increase

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hunicus 2022-11-13 22:36:46 -05:00
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7
frontend/src/app/docs/api-docs/api-docs-data.ts
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@ -8653,6 +8653,13 @@ export const faqData = [
fragment: "why-empty-blocks",
title: "Why are there empty blocks?",
},
{
type: "endpoint",
category: "advanced",
showConditions: bitcoinNetworks,
fragment: "why-block-timestamps-dont-always-increase",
title: "Why don't block timestamps always increase?",
},
{
type: "category",
category: "self-hosting",

4
frontend/src/app/docs/api-docs/api-docs.component.html
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@ -203,6 +203,10 @@
<p>When a new block is found, mining pools send miners a block template with no transactions so they can start searching for the next block as soon as possible. They send a block template full of transactions right afterward, but a full block template is a bigger data transfer and takes slightly longer to reach miners.</p><p>In this intervening time, which is usually no more than 1-2 seconds, miners sometimes get lucky and find a new block using the empty block template.</p>
</ng-template>
<ng-template type="why-block-timestamps-dont-always-increase">
<p>Block validation rules do not strictly require that a block's timestamp be more recent than the timestamp of the block preceding it. Without a central authority, it's impossible to know what the exact correct time is. Instead, the Bitcoin protocol requires that a block's timestamp meet certain requirements. One of those requirements is that a block's timestamp cannot be older than the median timestamp of the 12 blocks that came before it. See more details <a href="https://en.bitcoin.it/wiki/Block_timestamp" target="_blank">here</a>.</p><p>As a result, timestamps are only accurate to within an hour or so, which sometimes results in blocks with timestamps that appear out of order.</p>
</ng-template>
<ng-template type="who-runs-this-website">
The official mempool.space website is operated by The Mempool Open Source Project. See more information on our <a [routerLink]="['/about']">About page</a>. There are also many unofficial instances of this website operated by individual members of the Bitcoin community.
</ng-template>