Why payments cost what they cost, why self-custody is still too hard, and what we're building to change both. Written by the team building DYNK.
Sub-second finality isn't a faster version of the same thing. It removes the reason most payment infrastructure exists, and makes new kinds of payment viable.
The unbanked aren't unbanked because they're poor, they're unbanked because the account itself costs too much to run. What Global Findex 2025 shows.
A finance assistant is only useful if it sees everything, which is exactly why it shouldn't run on someone else's servers. How local inference works.
Card networks and banks quietly sell what you buy. The data has real value, the question worth asking is why none of it reaches the person who generated it.
Twelve random words became crypto's universal security model almost by accident. Here's why that's cost users billions, and what's replacing it in 2026.
A card sale costs a merchant roughly 2-3%. Here is where each slice of that actually goes, who sets it, and why no one at the table can negotiate it down.
What crypto payments for small business actually cost against card and Eftpos fees, why almost nobody pays in crypto yet.
Custodial vs non-custodial wallets comes down to one question: can anyone but you move the money? How to tell which you hold, and what it costs you.