For 7 years a small set of national postal authorities has been issuing postage stamps paired with on-chain tokens. We catalogue them — every one of them — at 142 editions and counting.

The catalogue began in 2019 with a single edition: the Austrian Post Unicorn, a pixel-art horn in a chip-stamp envelope. It is still the reference issue. Every entry below it traces its lineage back to that one piece of paper.

We document successes and failures with equal weight. Cancelled editions get the same care as pioneer ones.

What you can do from here: walk the 142 editions, browse the 35 issuers, untangle the 34 families, learn the vocabulary, or compare the 5 programs.