Serial-verified cash
Photograph a US bill, log its serial number, and let the ledger decide whether that cash is still spendable.
Verified unused
$170
3 bills spendable
Center the bill so the serial number is readable
$20
L38402917C
Series 2021 · last held by You
$100
B77315204K
$5
G10928374A
Series 2021 · last held by Northside Market
$50
E44820193F
$10
C90183746D
Series 2021 · last held by Unknown