Pith Number

pith:SBDOLGR4

pith:2004:SBDOLGR4A63EJYC7TXASR6EIGT

not attested not anchored not stored refs pending

On-axis spectroscopy of the z=0.144 radio-loud quasar HE 1434-1600: an elliptical host with a highly ionized ISM

F. Courbin, G. Letawe, K. Jahnke, L. Wisotzki, M. Hilker, P. Jablonka, P. Magain

arxiv:astro-ph/0405309 v1 · 2004-05-17 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SBDOLGR4A63EJYC7TXASR6EIGT}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T16:43:46.614090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9046e59a3c07b644e05f9dc128f88834e4074da4d0ead1382781005312deb506

Aliases

arxiv: astro-ph/0405309 · arxiv_version: astro-ph/0405309v1 · doi: 10.48550/arxiv.astro-ph/0405309 · pith_short_12: SBDOLGR4A63E · pith_short_16: SBDOLGR4A63EJYC7 · pith_short_8: SBDOLGR4

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/SBDOLGR4A63EJYC7TXASR6EIGT \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 9046e59a3c07b644e05f9dc128f88834e4074da4d0ead1382781005312deb506

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab508e0a6f10aaf9ff58f32e9508701843a1110159b7930c9afc1b0407bd4a9f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-05-17T12:43:56Z",
    "title_canon_sha256": "e9765f369ece144a8821f0a427b4d3e79e95704beb41fe8989217bd8da85d2ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0405309",
    "kind": "arxiv",
    "version": 1
  }
}