Pith Number

pith:FCHG2CSR

pith:2008:FCHG2CSR4B4XB32COGKIJPEL2E

not attested not anchored not stored refs pending

Chandra X-ray Grating Spectrometry of Eta Carinae near X-ray Minimum: I. Variability of the Sulfur and Silicon Emission Lines

D.B. Henley, I.R. Stevens, J.M. Pittard, K. Hamaguchi, M.F. Corcoran, T.R. Gull

arxiv:0801.4779 v2 · 2008-01-30 · 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{FCHG2CSR4B4XB32COGKIJPEL2E}

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	2026-05-18T02:35:23.433136Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

288e6d0a51e07970ef42719484bc8bd129b728fb2b1e2b99b4bc0e8732d35ad7

Aliases

arxiv: 0801.4779 · arxiv_version: 0801.4779v2 · doi: 10.48550/arxiv.0801.4779 · pith_short_12: FCHG2CSR4B4X · pith_short_16: FCHG2CSR4B4XB32C · pith_short_8: FCHG2CSR

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/FCHG2CSR4B4XB32COGKIJPEL2E \
  | 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: 288e6d0a51e07970ef42719484bc8bd129b728fb2b1e2b99b4bc0e8732d35ad7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1ea6439fda554f3b46d0eb25237b9148b844afc2b265a06e8d5a7073fb2eef4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-01-30T22:14:44Z",
    "title_canon_sha256": "3281242e4bce8b11e3b6e23a39952ee7cc0aaab943a2d5cabc85b9f4f61a7e25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.4779",
    "kind": "arxiv",
    "version": 2
  }
}