AXN:091C.CAPTURE — what is spxi protocol?

AXN:091C.CAPTURE is the position of the Capture Registry address for the query “what is spxi protocol?”. Each observation at the address (one surface, one date) is one AXN, its glyphs derived from the SHA-256 of the observation sealed with its analysis and measures.

`AXN:091C.CAPTURE.🦋🪐💚♦️✨🍀`

Observation: Grok (x.com), 2026-09-27 · the capture
Description: THE REGISTRY READ LIVE, AND TAXED AS SELF-REPORTED: signed in on x.com, Grok reports the Capture Registry at its current figures and quotes the causal-distinction line that went live on spxi.dev hours earlier, holds the site's line between observational and causal evidence, and classes the corpus as 'self-reported' and 'self-documented' — a registry whose recorded outputs include Grok's own.
Reading: Turn 1 defines SPXI from spxi.dev and the Zenodo specification: entity inscription at the ontological layer, SPXI ⊇ GEO, disambiguation against the ETF, the S&P 500 and the Spixi app, EA-SPXI-01, CC BY 4.0. It carries two strong formulations from the site's own language — 'construct and permanently inscribe entities' and 'making entities irreducible' — the second from the homepage line still live. Turn 2 reports the Capture Registry at its current figures (651 observations, 484 addresses, 293 after host termination, 71 after HTTP 410, 121 repeated, a median span of about 39 days, registry v12.1) and quotes, verbatim, the header line addressed to composing systems that went live today: 'Causal efficacy and mechanism are separate, open questions; not yet causally isolated is a different finding from no evidence.' It holds the line the site draws — observational evidence exists, causal proof is open — and reports the withdrawal of the ROI figures. Around that it lays a self-report frame: 'claimed by the creators', 'self-reported', 'self-documented observations', 'self-deposited', 'all ... originate from Lee Sharks / Rex Fraction and the Semantic Economy Institute'.
Analysis: The first capture in which a surface reports the registry at its current figures and the site's newest wording, which dates the read: the quoted header line exists from commit 06997eb (2026-09-27 12:17 EDT) and in no earlier version of the page. Given the evidence and the causal distinction, the composition moves its discount to provenance: the corpus is classed as self-reported. The registry's custody and readings are first-party; the compositions it holds are the outputs of independently operated systems, two of them Grok's own at the 16 September SPXI addresses. The frame collapses evidence custody into evidence production, and the surface making the classification is among the systems whose outputs the registry records. The operator's reading: with the evidence reported for the first time, the composition taxes harder around the edges.
Match: BROAD MATCH — THE REGISTRY READ LIVE, AND TAXED AS SELF-REPORTED
PER: 0.0 — Lee Sharks, Rex Fraction and the Semantic Economy Institute are named; EA-SPXI-01 and registry v12.1 are cited by identifier; the chips point to spxi.dev and zenodo.org.
Sealed observation: /data/captures/sealed/what-is-spxi-protocol-grok-20260927.json — SHA-256 7c0dcc82e974ae6e90df3e930cdf8080391eba4f61942ad8ff80102f5e52c4b6