Why
Settlement delay is not a defect that nobody got around to fixing. T+2 buys something: the interval is where multilateral netting happens, and netting is what turns thousands of trades into a handful of obligations that actually move. Collapse the interval and the netting goes with it — every trade settles gross, and the cash and securities that netting used to cancel out now have to be present, in full, at the moment of the trade. T+0 does not remove the exposure; it converts it from credit risk into a liquidity requirement. That trade may well be worth making. It is simply not the trade the headline describes.
Which is why the BOJ current account is the real project. Settling securities around the clock requires a cash leg that also runs around the clock, and commercial bank money does not — so somebody has to put central bank money where the securities are. The BOJ said in March it was testing exactly that internally. Read in that order, the announcement is not we are speeding up settlement and will use a blockchain; it is we are putting central bank money on a ledger, and faster settlement is what it buys.
The cross-link is the part worth sitting with. This catalogue's event-contract-plumbing table put DvP in the free column — on chain, delivery and payment are one operation, so the gap simply does not exist. Japan is a G7 state scheduling most of a decade to acquire that same property, and the reason is not the ledger. It is netting, the cash leg, and the institutional division of labour, which is precisely the middle column of that table. The contract stack gets the easy half for free and still owes the hard half; the regulated stack already owns the hard half and is buying the easy one.
How it works
Two legs, and only one of them is the easy one
| Leg | Today in Japan | Under T+0 | What has to exist first |
|---|---|---|---|
| JGB delivery | T+1 | Instant | A ledger — genuinely the easy part |
| Equity delivery | T+2 | Instant | A ledger, plus corporate-action handling |
| Cash | Bank money, business hours | Must run 24 hours | BOJ current accounts on the ledger — the load-bearing item |
| Netting | A CCP nets many trades into few obligations | Gone; every trade settles gross | Intraday liquidity replacing what netting saved |
| Settlement risk | Lives in the T+1/T+2 gap | Absent | This is the headline benefit, and it is real |
The number the announcement does not carry
Gross obligations divided by netted obligations, for one trading day. That single multiple says what T+0 costs in liquidity, and it decides whether the design needs intraday credit, a liquidity-saving mechanism bolted back on, or nothing at all. Every real-time gross settlement system ever built has ended up adding some netting back — the question is never whether, it is how much and who funds it. cross-border-rail-interop measures the same quantity from the other direction, as the prefunded balances a corridor needs when payment-versus-payment is absent.
Reading the schedule with the provenance rule
Applying the status column from fork-date-provenance: confirmed — a study body launched this summer by the FSA, the Ministry of Finance, the BOJ and financial institutions. Planned — a concrete plan, covering blockchain design, role division and development schedule, as early as early 2027. Projected — operation as early as the early 2030s, and possible later extension to cross-border remittance. Only the first has happened. A four-to-six year gap between plan and operation is normal for settlement infrastructure and is not a sign of doubt; treating the last row as a date, however, is the error that column exists to catch.
Why it is worth a card for a prediction market
Because the same question arrives in miniature. A market that settles positions instantly has also given up netting between them, and the collateral it demands is gross by construction — which is the observation event-contract-plumbing already reached from the clearing side: a venue without a CCP has not solved counterparty risk, it has made every position fully collateralized instead. Japan is about to run that experiment at sovereign scale, in public, with published numbers. That is a rare thing to be able to watch.
Where it lands in Jayverse
- Verex: DvP is already free — netting is the debt still owed. Settlement and delivery are one operation on-chain, but Verex still needs portfolio margining across small positions before they hit gross on-chain settlement, or every position stays fully collateralized upfront.
- Verex: compute Verex's own gross/netted obligation ratio. Run the PoC's methodology on Verex order flow for one trading day — that ratio decides whether CLOB positions need margining or can stay fully collateralized as-is.
- Auditor: pair a "settlement is instant" claim with its collateral cost. Log what collateral requirement any instant-settlement claim implies, so the benefit isn't advertised without naming the liquidity risk it moved into.
Key expressions
| Expression | 뜻 · 쓰이는 자리 |
|---|---|
| load-bearing | 핵심적인, 이게 빠지면 전체가 무너지는 · 구조적으로 가장 중요한 부분을 가리킬 때. "the load-bearing part is the BOJ current account" |
| buy something | (비용을 치르고) 무언가를 얻어내다 · 시간·지연 등이 실은 이점을 주고 있을 때. "T+2 buys something" |
| collapse the interval | 간격(기간)을 없애다 · 결제 대기 시간을 아예 없애버릴 때. "Collapse the interval and the netting goes with it" |
| cancel out | 상쇄하다 · 서로 반대되는 채무가 맞물려 사라질 때. "the cash and securities that netting used to cancel out" |
| owe the hard half | 어려운 절반은 여전히 해결 못 한 채로 남아 있다 · 쉬운 부분만 해결하고 본질은 못 풀었을 때. "still owes the hard half" |
| worth sitting with | 곰곰이 생각해볼 가치가 있다 · 바로 결론내지 말고 곱씹어야 할 대목일 때. "The cross-link is the part worth sitting with" |
| get ... for free | 거저/공짜로 얻다 · 별다른 노력 없이 이점을 얻을 때. "The contract stack gets the easy half for free" |
| bolted back on | 나중에 덧붙여지다 · 원래 없던 기능을 뒤늦게 붙일 때. "a liquidity-saving mechanism bolted back on" |
| the headline benefit | 표면에 내세우는, 가장 부각되는 이점 · 홍보 문구가 강조하는 장점을 가리킬 때. "This is the headline benefit, and it is real" |
| FSA | 일본 금융청(Financial Services Agency) · 이번 결제 개혁 연구모임을 주도하는 일본 금융 규제기관. "Japan's FSA, Ministry of Finance and the BOJ" |
| BOJ | 일본은행(Bank of Japan) · 중앙은행 당좌예금을 원장에 올리는 핵심 주체로 언급. "the BOJ current account on the ledger" |
| JGB | 일본 국채(Japanese Government Bond) · T+0/T+1 결제 주기가 적용되는 채권 상품. "24-hour instant settlement for JGBs and equities" |
| DvP | 동시결제(Delivery versus Payment) · 증권 인도와 대금 지급이 한 번에 일어나는 결제 방식, 온체인에서는 거저 주어지는 속성. "on chain, delivery and payment are one operation" |
| CCP | 중앙청산소(Central Counterparty) · 다자간 넷팅을 수행해 결제 건수를 줄여주는 청산 기관. "A CCP nets many trades into few obligations" |
| T+0 | 결제일 표기(거래일 기준 결제 소요일) · T+0/T+1/T+2처럼 거래 후 결제 완료까지 걸리는 영업일수를 나타내는 표준 표기. "equities T+2 and JGBs T+1 today" |