Auditable claim record

CMOS design of 4-bit Signed Adder Subtractor · listed in shuttle

Tiny Tapeout IHP 25a · SUPPORTED

urn:vlsi:claim:19f372817f361d18e56cf3cb0ff1ec299668c2eab8a3beb77045b200fa761e90

Official registry lists this repository, submitted revision and module. The listing does not establish fabrication, manufacture, validation or measured results.

Back to CMOS design of 4-bit Signed Adder Subtractor → · Complete history as JSON · JSON-LD

Evidence

Tiny Tapeout IHP 25a official shuttle registry ↗

The Tiny Tapeout IHP 25a registry lists this repository at submitted revision f2174054d3ee7b97bb7075c8d1027794b842d70e, under module tt_um_sign_addsub.

Tiny Tapeout official registry · projects[23]: repository, commit and macro · supports

Published date unknown · Retrieved 2026-10-13T23:58:54.646Z

urn:vlsi:evidence:d19b03fcfeba8df1900a7ec0a2c97ce0b44e15d1177eb38e30701f23fdaf4e34

Assessment history

New assessments preserve earlier records. A correction changes the current interpretation without rewriting what VLSI knew before it.

Recorded assessments, oldest first
Revision	Recorded at (UTC)	Status	Validity	Reviewer & reason
1	2026-10-14T00:04:17.036Z	SUPPORTED	unknown unknown	checked-catalog-source-adapter (adapter) Evidence ingested by official-registry-and-pinned-documents/1.0.0. Explicit upstream evidence only. No fabrication, validation, successful tapeout, measured performance, arbitrary-version interoperability or production qualification is inferred.