I'd not heard of blockscore.com, thanks. In Googling for a reputable UK equivalent, I noticed that the UK government has decided to roll its own solution "Verif

I'd not heard of blockscore.com, thanks. In Googling for a reputable UK equivalent, I noticed that the UK government has decided to roll its own solution "Verify" for its online services [0] previously mentioned on HN [1] I'd considered postal addresses, similarly to how Google sends (used to send?) codes on postcards to verify ownership of addresses in Maps. Obvious problems with this are (1) time; and (2) it verifies access to a location rather than identity. A valid credit card, verified with a micropayment a la PayPal, might be a potential way forward. But charging people obviously puts them off, even if it's a token amount. [0] https://www.gov.uk/government/publications/introducing-govuk-verify/introducing-govuk-verify https://www.gov.uk/government/publications/introducing-govuk... [1] https://news.ycombinator.com/item?id=10716104 https://news.ycombinator.com/item?id=10716104 (Edit for clarity.)