I am sorry in your loss.
In case your husband is conserving bitcoin at a giant identify bitcoin alternate, it’s possible you’ll need to contact the alternate administrator to inquire in regards to the process.
If the bitcoin is outdoors an alternate, then accessing it requires realizing a really lengthy password or a really giant quantity, probably beginning with “0x” (which means hexadecimal). It might most likely be written someplace on paper, however can also be hidden in a password-protected file or saved in a particular USB or different crypto machine.
When you’ve got cause to consider your husband might have vital cash on this, it is best to actually discover a educated pal whom you belief that will help you discover the entry credentials for the cash. Except you might be fairly tech savy your self, it is best to strongly contemplate instantly promoting the bitcoin for “actual cash”.
Alternatively, if in case you have no proof that your husband had cash in bitcoin (apart from, as you stated, “a hyperlink that stated Bitcoin”) it’s possible you’ll need to perceive that there are lots of people with curiosity in Bitcoin who don’t maintain a significant quantity of Bitcoin.
Lastly, as stated already, don’t belief anybody on the web. Don’t give anybody any passwords or any numbers you don’t absolutely perceive till you get assist from a educated pal or have educated your self very rigorously. This can be very straightforward to steal Bitcoin, it’s almost instantaneous, and it’s nearly utterly outdoors of authorized protections.