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This is a billionaire-funded initiative designed specifically to undo the California Billionaire Tax, Prop. 40.
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Vetted · Oct 3, 2026
Both keys signed this exact version, and it is in the public log.
Fingerprint
27cb96fbf7dc3ff9cba37773a7c77bfd824b0a9f635a0c08093ec19fcee15f01
A SHA-256 hash of the record as published. Changing one character changes it.
Signatures
Independently checked: signed by the site's service key, which only the publishing system holds.
Owner approved: signed with the owner's key, which the public log lists.
Technical details
- Service key id:
service:a3f979541aee7826- Owner key id:
SHA256:h82SrxLU1wYr+jpy4Vl9/9iQlAO+HQX1umVBdhy/Ss0- Owner keys file in the public log:
integrity/keys/owner.allowed_signers
Log entry
Entry 9, published Oct 3, 2026. Each entry includes the fingerprint of the one before it, so no earlier entry can change unnoticed.
Open entry 9 in the public repositoryMerkle proof
These hashes lead from this record's fingerprint to the entry's root: 510fa346bc644ee6942848357c92ed2869f227a8977c9bcc638184f371d8cee4
- 27d5e5356d4a440379c5ae03b84862b30410938b357ea324859b8f0bc1c04f44
- c0639f1feecb886a020197f4b4f23e3833d05d5eeba5596926e9676236742c02
- 88aaf48aa818b03efa6fe888954952aef9ca6812a9f7b2c6645e963b499ee3f1
- b3c8534bdd8c231849269c8ccdb08b80b9efb478347600af7660452a33f665a1
- f1b3ed3845674a4203d7f8f0dd7d660be14afe2219829fa711d48f2357eb2d55
- 501380cb2bdf3d78d0eb3521019289180d3bc10cb24193e13bec8a9e8b297d94
- 9b8ab8130fcfeac8d80c79834555c9c5576e160a7aaf347dc90223422cabe0fb
Outside witnesses
Versions
- Entry 9 · Oct 3, 2026 · current27cb96fbf7dc3ff9cba37773a7c77bfd824b0a9f635a0c08093ec19fcee15f01
- Entry 2 · Oct 3, 2026 · replaced on Oct 3, 20262bf74421e6fd1e8dbd6e09eeeb733e91eb1b8b78e2d6de05bbba357b7c0087c5
Judgments behind this record
Verdict on the claim
Call: Missing context
On funding, the FPPC top-contributor list shows Building a Better California, whose top donors the FPPC lists as Sergey Brin and L. John Doerr III, gave $89,800,000 of the $89,822,537.26 from the top contributors to the main committee supporting Proposition 42 on the FPPC list. On purpose, the measure's findings and statement of purpose describe protecting retirement savings and personal property and requiring new taxes to apply only prospectively; they do not mention Proposition 40. Section 2(a)(2) bars a tax "imposed on a taxpayer based upon their residency status on a date prior to the effective date of the tax", and the Analyst says Proposition 40 would tax billionaires who were California residents on January 1, 2026, so Proposition 40 falls within that wording on its face. Section 5 says an initiative on the same ballot that taxes ownership of such assets, or that taxes based on past conduct or status, is deemed in conflict and is void if Proposition 42 receives more affirmative votes. The guide does not state whether Proposition 40 is covered, and the "designed specifically" part is a statement about intent that the official documents neither confirm nor refute.
Made by a sourcer · checked by an independent checker · approved with the owner's key
Technical details
- Recorded call:
missing-context- Author id:
sourcer:ca-2026-measures- Checker id:
checker-judgments-ca-2026- Owner key id:
SHA256:h82SrxLU1wYr+jpy4Vl9/9iQlAO+HQX1umVBdhy/Ss0
Vetted · Oct 3, 2026
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git clone https://github.com/Macpire/ideology-integrity-log
cd ideology-integrity-log
npx tsx integrity/verify-record.ts --log ca-2026 ca-prop-42-claim-4 --repo .To check that the text this site serves is that signed copy, add the site's address. Only this check ties the log to what you read here:
npx tsx integrity/verify-record.ts <site> ca-2026 ca-prop-42-claim-4 --repo .