A DOI is literally a URL.
As in a DOI === a URL.
As in {DOI} === https://doi.org/{DOI}.
A DOI is literally a path beneath a single domain that you have to pay a dollar and your soul for.
@jonny Guess I missed the memo: 'No pubs, no problem...just your soul and a dollar!' 😅 Maybe I should start a fundraising campaign: 'Help Danny get a DOI and save his soul!' 😂