Thanks. It should be the owner who submits it, but looks like he's not active these days. Hence again, this time with the hashtag: 

Not ours, BTCJuniorClub just shares this cool video to help its author get more exposure: 'Bitcoin song for kiddos 🎶 Short Stories Built with LEGO'. Fun + Education by nostr:nprofile1qqsgk7vw0k0zcllr3dzkzueqkgv9sw7puax8236z8zlrcfjtazql7pgpzdmhxue69uhhqatjwpkx2urpvuhx2ue0z7upk0 📺 #BullishBounty
 https://video.nostr.build/d91eb963acb950c5fe598c23d117a5cff9aeb2c62da91486034e834263d60dd5.mp4