Pith Number

pith:M3GFFIU5

pith:2007:M3GFFIU5FLQV3VRDOFIMKIM6LF

not attested not anchored not stored refs pending

Eta Carinae across the 2003.5 minimum: Spectroscopic Evidence for Massive Binary Interactions

D.J. Hillier, D.J. Lindler, K.E. Nielsen, K. Hamaguchi, M.F. Corcoran, S. Ivarsson, T.R. Gull

arxiv:astro-ph/0701632 v1 · 2007-01-22 · 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{M3GFFIU5FLQV3VRDOFIMKIM6LF}

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	2026-05-18T04:29:06.987041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66cc52a29d2ae15dd6237150c5219e5956db8d7aa7b1cc795cea8c3dba973ef1

Aliases

arxiv: astro-ph/0701632 · arxiv_version: astro-ph/0701632v1 · doi: 10.48550/arxiv.astro-ph/0701632 · pith_short_12: M3GFFIU5FLQV · pith_short_16: M3GFFIU5FLQV3VRD · pith_short_8: M3GFFIU5

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/M3GFFIU5FLQV3VRDOFIMKIM6LF \
  | 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: 66cc52a29d2ae15dd6237150c5219e5956db8d7aa7b1cc795cea8c3dba973ef1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb0615b61676edb0b7165686f108c057f63832ae54fd13704d4aad06171dbed5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-22T21:55:02Z",
    "title_canon_sha256": "d5ca210ee7b6a25044870a67268f4a374ce69fb98a330aa2586e8182584c96d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701632",
    "kind": "arxiv",
    "version": 1
  }
}