The video describes two Minecraft dragon-egg duplication tricks, but the exact steps and current reliability are not strongly verified from the available sources.
Claim-by-claim breakdown
Unsupported (52% confidence): You can duplicate the dragon egg in Java Edition by removing lava, placing fences under the end portal, and dropping the egg through in a specific setup. Minecraft’s duplication guide notes that dragon eggs can be duplicated by bug exploits, but it does not confirm this exact method or version in the sources I found.
Unsupported (49% confidence): Using this Java method will give you two dragon eggs. I found general documentation that dragon eggs can be duplicated by glitches, but not a source confirming this specific result for the method shown.
Unsupported (42% confidence): The Java duplication trick can be repeated infinitely with more eggs. No source I found confirmed unlimited repeatability for this exact dragon-egg setup.
Unsupported (55% confidence): On Bedrock Edition, placing a dragon egg on a powered big dripleaf and rejoining the game duplicates it. The available sources support the existence of Bedrock duplication glitches and mention dragon eggs in duplication contexts, but not this specific step-by-step claim.
Unsupported (50% confidence): The Bedrock method will produce two dragon eggs. The sources I found do not confirm the exact outcome of the claimed Bedrock method.
Accurate (94% confidence): Dragon eggs are only obtained once from the first ender dragon kill in Java Edition. The Ender Dragon article says the dragon egg appears only the first time the dragon is killed in Java Edition.
Accurate (92% confidence): In Bedrock Edition, the dragon egg appears on the first and second ender-dragon kills because of a bug. The Ender Dragon article explicitly says Bedrock gets the egg on the first and second kill because of a bug.