Catalog session #662

firefox-esr 140.14.0esr on Debian 12 — identity declared before the run, captured through the live edge.

Verification	controlled
Runner	container
Registered	2026-09-01 00:54
Captured	2026-09-01 00:54
Driver	`capture-matrix/d04b10e`
Run	`monthly-2026-09-01-104054`
Mode	`prod`
Image	`fpcap-firefox-headless`
Image digest	`sha256:0cd7dc85e04323b5d718dc15cde9586f84921de0645210e8997b0f071f4fc17a`
Matrix SHA-256	`c6498282f322`
Raw client version	`Mozilla Firefox 140.14.0esr`

Captures (1)

The first capture is the registration page view; probe captures are the beacon hitting each configured origin with this session's correlation id — for browsers that is how one session records both the TCP and QUIC stacks.

2026-09-01 00:54 · page · quic (HTTP/3) · thumbprint.me

TLS ClientHello (JA4)	`q13d0314h3_55b375c5d22e_61e396c58b1f`
HTTP request (JA4H)	`ge30nn09enus_3456ae554dd0_000000000000_000000000000`
QUIC transport params	`q12_022106b74856`
User-Agent	`Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0`

verbatim wire tuple (immutable evidence, includes raw variants)

{
  "alpn": "h3",
  "ja4": "q13d0314h3_55b375c5d22e_61e396c58b1f",
  "ja4_o": "q13d0314h3_85902d7a8465_725a3ec6dde0",
  "ja4_r": "q13d0314h3_1301,1302,1303_0005,000a,000d,0017,001c,0022,002b,002d,0033,0039,fe0d,ff01_0403,0503,0603,0203,0804,0805,0806,0401,0501,0601,0201",
  "ja4_ro": "q13d0314h3_1301,1303,1302_0022,0010,000d,0005,0000,0017,000a,ff01,001c,002d,002b,0033,0039,fe0d_0403,0503,0603,0203,0804,0805,0806,0401,0501,0601,0201",
  "ja4h": "ge30nn09enus_3456ae554dd0_000000000000_000000000000",
  "ja4h_r": "ge30nn09enus_user-agent,accept,accept-language,accept-encoding,upgrade-insecure-requests,sec-fetch-dest,sec-fetch-mode,sec-fetch-site,priority__",
  "quic_tp": "q12_022106b74856",
  "quic_tp_r": "q12_0001,0004,0005,0006,0007,0008,0009,000b,000e,000f,0011,0020",
  "tls_cipher": "TLS_AES_128_GCM_SHA256",
  "tls_version": "TLSv1.3",
  "user_agent": "Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0"
}

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