WordPress/wp-includes/blocks/social-links/block.json

{
	"apiVersion": 2,
	"name": "core/social-links",
	"category": "widgets",
	"attributes": {
		"openInNewTab": {
			"type": "boolean",
			"default": false
		}
	},
	"providesContext": {
		"openInNewTab": "openInNewTab"
	},
	"supports": {
		"align": [
			"left",
			"center",
			"right"
		],
		"anchor": true
	}
}