Nuño Sempere called it:

Our forecasters think there’s a 5.2% (2% to 10%) chance that the US Senate will pause frontier AI development in the US before 2029, absent a treaty with China.

We find out by Dec 31, 2028. 863 days to go

Open

Nuño Sempere: “Our forecasters think there’s a 5.2% (2% to 10%) chance that the US Senate will pause frontier AI development in the US before 2029, absent a treaty with China.

🔒 The test · locked Aug 22, 2026

MET if (The US Senate passes binding legislation imposing a pause on frontier AI development in the United States (hearings, non-binding resolutions, and bills that fail to pass the Senate do not count) and not (A treaty or formal bilateral agreement between the United States and China governing AI development has entered into force)) at any point, before 2028-12-31 23:59 (UTC).

Settles by documented review of public evidence against these locked criteria; the reviewer is named and the reasoning published.

Test details
Settled byevidence
Window2026-08-17 2028-12-31
TimezoneUTC
Data vintagelatest_revision
Min source tier1
Stated likelihood5.2% — preserved, never scored
Contract hash0x5208e81f…6874f6
Full resolution criteria

Resolves YES if, at any time before January 1, 2029, the US Senate passes binding legislation that pauses frontier AI development in the United States, and no US–China treaty or formal bilateral agreement on AI has entered into force at that time. Hearings, non-binding resolutions, and bills that do not pass the Senate do not count.

Quote verified against the source

Nuño SempereSentinel (Substack)Said Aug 17, 2026Added to Thonest Aug 22, 2026Anchored Aug 22, 2026

Added by Thonest from a public source. The person quoted did not submit, approve, or endorse this record; the wording is verified against the source itself.

Read the original on blog.sentinel-team.org

Weekly Sentinel global risk brief, in the Technology and AI section responding to Senator Bernie Sanders' call for US tech companies to pause AI development.

History — append-only

2026-08-22
Recorded · Recorded and locked from the original source

Proof

Evidence hash0x56951e0c…fda43f
Source snapshot
Record fingerprint0x56951e0cf598fa2aa175462ef07013107edc5fa4afff2bb5a8e69f7af2fda43f
Proof path
2 hashes from this record to the anchored root
  1. 0xec23a9f86f98eabd146c03d0783a186ecc3abd7be7732f4fe978a32aa582efa1
  2. 0x2f52ed67e686d71bf69f517f54e9f592e4f4bd0f82363607d8d8de2b772d8c53
Merkle root0x2c36c415b1c5db35bfb54d13c0775f8955b9b4acc4af3ea41e947d69d8d53fdc
batch #65 manifest · 4 entries
Registry0x3d74d9e2f0f4c741fc49b34cc119b6db0cef47c0 · entry #64
the contract refuses any batch that doesn’t follow the previous one, and has no function to edit or delete one — including for us
Anchored onchainbase-mainnet · Aug 22, 2026
0x0b50cb24…137a32 on block explorer
Third-party archiveNone
No independent copy could be captured for this source.
Quote checkThe quote appears verbatim in the response the platform returned.
Platform capture0xb6b8dc169283ba8702143a3236a5afa8093e9d99559dde17cd54d3ca41082eee
view the canonical capture · the page as served to us, kept verbatim and covered by the evidence hash

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Related

US SenateChinaAI development pause