caddisfollow us
caddis

spend it, own it.

get stock for every swipe

caddis turns everyday spending into tiny pieces of the companies you buy from — automatically.

request an invite

invite-only early access

the loop

four steps, on repeat

a caddisfly larva builds its case from whatever the riverbed gives it. your spare change is the debris.

  1. step 01

    01

    you pay with your fiat or crypto card.

    nothing changes at the till. tap, swipe, insert. any card you already carry.

  2. step 02

    02

    caddis catches the swipe and sizes the roundup.

    3%, 5%, or up to the nearest dollar. you set it once and forget it.

  3. step 03

    03

    it buys the stock token of the company you bought from.

    the merchant resolves to a ticker through the open registry, then the roundup settles on chain 4663.

  4. step 04

    04

    your case grows — and so does the next roundup.

    every swipe adds a fragment. the case is yours, held in your name, from day one.

the receipt

every swipe leaves a fragment

a receipt used to be the end of a purchase. with caddis it is the start of a position. each row is a real card swipe, the roundup caddis sized for it, and the stock token the merchant resolved to.

no lists to maintain, no tickers to look up. the registry does the matching. you just keep buying coffee.

merchants shown are generic categories · tokens are illustrative

caddis · receiptchain 4663

roundup mode · nearest dollar

merchantamountrounduptoken
  1. corner coffee$4.60+$0.40
  2. streaming plan$15.99+$0.01
  3. hardware store$42.17+$0.83
  4. grocery run$87.30+$0.70
  5. rideshare$12.40+$0.60
  6. pharmacy$23.85+$0.15
  7. fuel stop$51.02+$0.98
  8. bookshop$18.50+$0.50
  9. corner coffee$5.10+$0.90
  10. sneaker outlet$96.00+$1.00
  11. cloud storage$9.99+$0.01
  12. grocery run$63.44+$0.56
  13. burger stand$14.75+$0.25
  14. airline fare$214.20+$0.80
  15. phone plan$45.00+$1.00
  16. corner coffee$4.60+$0.40
  17. home goods$38.90+$0.10
  18. music subscription$10.99+$0.01
rounded this strip$9.20

the roundup dial

set the size of the debris

pick how much of every swipe becomes a roundup. slide your usual monthly card spend and watch the case build. it is an estimate, nothing more.

roundup

$1,800
$200$6,000

a $4.60 coffee → +$0.23

projected annual accumulation · estimate

$1,080

54 pebbles · one pebble ≈ $20 of roundups

estimate only. counts what you would set aside, not what it would be worth. token prices move and can fall. nothing here is a projection of returns or investment advice.

CASE12 TOKENSBREWGRCRSTRMTOOLRIDEFUELPHRMKICKCLDSPAGECELLWING

■ latest roundups · cross-section, not to scale

the case

your case is built from whatever the river gives you

the caddisfly larva does not choose its materials. it takes grit, shell, twig, whatever drifts past, and cements each piece into armour it carries for life.

your case works the same way. every swipe adds a fragment of the company you just paid. over months the fragments lock together into a portfolio that mirrors how you actually live, not a model of how you should.

held in your name. readable on chain 4663. yours to keep, move or crack open.

the registry

an open map from merchant to ticker

the matching that makes caddis work lives in a public registry on chain 4663. anyone can read it. anyone can propose a row, dispute one, or curate a category. no single party decides who owns the mapping.

think of it as plumbing: boring, shared, and better every time someone fixes a leak.

read the registry
merchant patterntokenstatus
corner coffeeBREWverified
hardware storeTOOLverified
streaming planSTRMverified
fuel stopFUELproposed
public · append-only · curated by anyone

early access

request an invite

caddis is opening in small batches. leave an email and we will write when your invite is cut. nothing else, no newsletter.

invite-only early access