I'm selling "blockchain.digital" if anybody is interested:
https://www.namecheap.com/domains/marketplace/listing.aspx?marketplaceid=32590052

I have over 100 other domains listed for sale as well (including some 2-letter domains), come have a look if you get a chance:
https://www.namecheap.com/domains/marketplace/buy-domains.aspx?sellerusername=brianbbad