Pith Number

pith:JJDNK3RA

pith:2009:JJDNK3RATLQN2PFL3A6AWM6GCL

not attested not anchored not stored refs pending

Precession and Nutation in the eta Carinae binary system: Evidences from the X-ray light curve

D. Falceta-Goncalves, Z. Abraham

arxiv:0909.1990 v1 · 2009-09-10 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JJDNK3RATLQN2PFL3A6AWM6GCL}

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	2026-05-18T02:11:57.372954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a46d56e209ae0dd3cabd83c0b33c612e4d8b77cd13999aa853e4ac6da41b6af

Aliases

arxiv: 0909.1990 · arxiv_version: 0909.1990v1 · doi: 10.48550/arxiv.0909.1990 · pith_short_12: JJDNK3RATLQN · pith_short_16: JJDNK3RATLQN2PFL · pith_short_8: JJDNK3RA

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/JJDNK3RATLQN2PFL3A6AWM6GCL \
  | 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: 4a46d56e209ae0dd3cabd83c0b33c612e4d8b77cd13999aa853e4ac6da41b6af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ad652d6a30ca953b4c7f404e35e5576d449fbc7e0549f25f170cf929a3cbf9f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-10T17:15:30Z",
    "title_canon_sha256": "b02a821c2c8d31af3c327cbf2efaad042754ae2b1dd6291dfb215b5fcd600f44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1990",
    "kind": "arxiv",
    "version": 1
  }
}