{"type":"rich","version":"1.0","author_name":"fiatjaf (npub180…jh6w6)","author_url":"https://nostr.ae/npub180cvv07tjdrrgpa0j7j7tmnyl2yr6yr7l8j4s3evf6u64th6gkwsyjh6w6","provider_name":"njump","provider_url":"https://nostr.ae","html":"Does anyone have any technique for easily converting numbers to hex and vice-versa using just a human brain?"}