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The block ID reference is a list of vanilla Minecraft blocks and items together with their identifiers.
An identifier is the text name the game knows an item by: the word minecraft, a colon and the block's name. That is what commands, datapacks and server configs understand.
Every entry comes with its inventory icon, the block name in your language and a ready give command that copies with one button. Search works on the name and on the identifier alike, so you can look things up by the name you see or by the raw id.
There is a second mode — Legacy. Before the game moved to text names, blocks had numeric IDs. That mode shows them: the decimal and hexadecimal value plus the flags from the Bedrock data reference. Handy for older builds, plugins and guides where those numbers are still in use.
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