Obsidian already supports URI to a block by block ID through the URI 'obsidian://open?file=file#^block_id'. Please note that the 'file#^block_id' part needs to be URI encoded. Therefore, the URI in the 'Source' field will be 'obsidian://open?file={file}%23%5E{block_id}'.
Obsidian already supports URI to a block by block ID through the URI 'obsidian://open?file=file#^block_id'. Please note that the 'file#^block_id' part needs to be URI encoded. Therefore, the URI in the 'Source' field will be 'obsidian://open?file={file}%23%5E{block_id}'.