Pith Number

pith:ULQJBPY6

pith:2015:ULQJBPY6SDF6TPZE2ZJEMOLUQF

not attested not anchored not stored refs pending

The Optical Wind Line Variability of $\eta$ Carinae During the 2009.0 Event

Anthony F. J. Moffat, Douglas R. Gies, Lucas St-Jean, Noel D. Richardson, Theodore R. Gull

arxiv:1507.07417 v1 · 2015-07-27 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ULQJBPY6SDF6TPZE2ZJEMOLUQF}

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	2026-05-18T01:32:28.605879Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2e090bf1e90cbe9bf24d65246397481763377b4b8cf903a8f2e41f5bb9deb23

Aliases

arxiv: 1507.07417 · arxiv_version: 1507.07417v1 · doi: 10.48550/arxiv.1507.07417 · pith_short_12: ULQJBPY6SDF6 · pith_short_16: ULQJBPY6SDF6TPZE · pith_short_8: ULQJBPY6

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/ULQJBPY6SDF6TPZE2ZJEMOLUQF \
  | 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: a2e090bf1e90cbe9bf24d65246397481763377b4b8cf903a8f2e41f5bb9deb23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c842fc3f751357af6695afa834d5ed562a6bc87b8d7dccd5f8c5ccb7b300b2c9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-07-27T14:39:05Z",
    "title_canon_sha256": "44ea7cae041cab0a34299aec9fcf965986970f2af0bf3d59a6adda7ba3035dd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07417",
    "kind": "arxiv",
    "version": 1
  }
}