Pith Number

pith:SZ2GEN2K

pith:2004:SZ2GEN2KT45QEELWLYCOHERIO5

not attested not anchored not stored refs pending

XMM-Newton observations of the sigma Ori cluster. I. The complex RGS spectrum of the hot star sigma Ori AB

E. Franciosini, J. Sanz-Forcada, R. Pallavicini

arxiv:astro-ph/0404078 v2 · 2004-04-05 · 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{SZ2GEN2KT45QEELWLYCOHERIO5}

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	2026-07-04T16:43:31.304471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

967462374a9f3b0211765e04e39228775ba03c9f831adb52b480d777f00b8191

Aliases

arxiv: astro-ph/0404078 · arxiv_version: astro-ph/0404078v2 · doi: 10.48550/arxiv.astro-ph/0404078 · pith_short_12: SZ2GEN2KT45Q · pith_short_16: SZ2GEN2KT45QEELW · pith_short_8: SZ2GEN2K

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/SZ2GEN2KT45QEELWLYCOHERIO5 \
  | 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: 967462374a9f3b0211765e04e39228775ba03c9f831adb52b480d777f00b8191

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4098e2e94cf0dc1bd51ee40841d4970b59936d97008f0f9731bce062c2cebe58",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-04-05T16:40:08Z",
    "title_canon_sha256": "4bfe85f504a1dad08bb3da58877d894249bf2476d3aaf90736bc3dc8edd676fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0404078",
    "kind": "arxiv",
    "version": 2
  }
}