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Byzantine Solidus
Byzantine Solidus
© Byzantine Solidus, Inc. · Miami, FL
The Byzantine Solidus coin — engraved cruciform monogram, beaded rim, inscription BYZANTINE SOLIDVS CONDITA MMXXVI MIAMI
Byzantine Solidus, Inc. · Miami

A Miami holding company. We build and hold the companies making digital money durable — starting with Permara.

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

I · The first solidus
Solidus · gold · 4.5 gConstantine’s mint, AD 312

Constantine’s mint struck it in 312 at seventy-two to the Roman pound. What made it money was not the gold: it was that nobody changed the standard for the next seven hundred years.

A stable currency, seventeen centuries before anyone needed the word.

Specimen record
Weight4.5 grams
StandardSeventy-two to the Roman pound
MetalNearly pure gold
Accepted“Everywhere, from one end of the earth to the other.”
AD 312 · struck at 4.5 g
AD 1034 · the standard slips
MMXXVI · Miami
II · The second meaning

In 1982 Leslie Lamport, Robert Shostak and Marshall Pease asked how generals besieging a city could agree on a plan when their only messengers might be lying to them.

Solving it produced Byzantine fault tolerance — the reason a network of strangers can keep one honest ledger. It is the mathematics under every blockchain running today.

01 · Independent participants

The coin divides. Each fragment keeps its own copy of the record.

02 · Messages pass

No participant is asked to trust another — only to compare notes.

03 · One of them lies

Inconsistent reports are checked against the rest — and rejected.

04 · Agreement, without trust

The honest majority settles on one shared state. The structure holds.

One empire, two inheritances: durable money, and a way to agree without trust.

III · What we do

Not a fund and not a studio: a holding company that owns operating businesses and intends to keep them.

Ring I of III

Stability over spectacle

We would rather own something that still works in 2050 than something that trends this quarter.

Ring II of III

Engineering over promises

Where a claim can be replaced by a proof, we replace it. The rest is marketing.

Ring III of III

Decades over quarters

No fund clock and no exit window, so nothing has to be sold at the wrong moment.

IV · Holdings

Byzantine Solidus is the holding company. Permara is its first holding — held inside the structure, permanently.

V · Members
Member

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

Member

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

Member

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

Member

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

More on the members
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.

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