Byzantine Solidus
BYZANTINE · SOLIDUSEST · 2026BS
Byzantine Solidus, Inc. · Miami

Durable money is an engineering problem.
It has been solved before.

I · The first solidus
Solidus · gold · 4.5 gMint of Constantinople, AD 312

In the year 312, Constantine began striking a new gold coin at seventy-two to the Roman pound — 4.5 grams, about the width of a thumbnail. The innovation was not the coin; it was the refusal to change it. For roughly seven hundred years the solidus held its weight and purity through plagues, sieges, and some fifty emperors of varying competence, paying armies on the Danube and buying silk at the far end of the road to China. Hoards still surface from Scandinavia to Sri Lanka, buried by people who trusted the coin more than the ground they hid it in.

No peg. No reserve. Discipline, minted — the original stablecoin, seventeen centuries early.

AD 312 · struck at 4.5 g
AD 1034 · the standard slips
MMXXVI · Miami
AD 312 · struck at 4.5 g
AD 1034 · the standard slips
MMXXVI · Miami
II · The second meaning

In 1982, three computer scientists — Leslie Lamport, Robert Shostak, and Marshall Pease — posed a riddle they called the Byzantine Generals Problem. Armies surround a city. The generals can coordinate only by messenger, and some of them are traitors. How do the loyal ones agree on anything, when every message might be a lie?

Their answer — that agreement can be engineered among parties with no reason to trust one another — became Byzantine fault tolerance. It runs beneath every blockchain consensus mechanism in operation today.

The empire gave us the coin. The problem named for it gave us the consensus. We answer to both.

Tesserae reaching consensus
III · What we do

Byzantine Solidus, Inc. is a holding company in Miami. We build and hold the companies that make digital money durable — starting with SafeBank.

Stability over spectacle

The solidus outlived every emperor whose portrait it carried. That is the correct ratio of product to founder.

Engineering over promises

Trust is not announced. It is constructed, tested, and left running until nobody remembers doubting it.

Decades over quarters

Seven hundred years is the benchmark. Against it, a fiscal quarter rounds to zero.

IV · Holdings
Est. 2026

SafeBank

The financial operating system for programmable money: accounts, payments, yield, and cards for people, businesses, and AI agents. Money that simply works — and never sleeps.

safebank.ai ↗
Room left on purpose
V · Members
Arnold Thorstad
Member

Serial founder across food ingredients, medical supply, and beverages, with operating companies on four continents.

Roberto Delli
Member

Two decades of management consulting and accounting — telecommunications to shipbuilding — and operations across Europe, Asia, and South America.

Lance Ennen
Member

Twenty years in fintech, payments, and digital identity; built platforms acquired by Groupon and HelloFresh, and co-founded Cerebrum.

Micah Kershner
Member

Twenty-five years in payments at Worldpay, FreedomPay, and Paysafe; former governing-council member of Hedera and Klaytn.

VI · Miami

Byzantium was a port. It sat on the strait where Europe faces Asia, and made its living on what passed through. Miami is ours — the crypto capital of the world, where new money meets open water. One parallel is enough.

·
25°46′ N · 80°11′ W
VII · Correspondence
inquiries@byzantinesolidus.com
Press, partnerships, and anything worth asking.
Byzantine · Solidus