Pith Number

pith:EIFMWCWT

pith:2014:EIFMWCWTSRUJIVHHV4NFHZDAUO

not attested not anchored not stored refs pending

Light Echoes from Eta Carinae's Great Eruption: Spectrophotometric Evolution and the Rapid Formation of Nitrogen-rich Molecules

A. Campillay, A. Kunder, A. Rest, A. Zenteno, C. Contreras, C. Gonzalez, D. James, D. L. Welch, E. Y. Hsiao, F. B. Bianco, G. R. Knapp, J. L. Prieto, L. Paredes Alvarez, M. M. Phillips, N. Morrell, N. R. Walborn, N. Smith, R. Chornock, R. C. Smith, S. Margheim, T. Matheson

arxiv:1403.7202 v2 · 2014-03-27 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EIFMWCWTSRUJIVHHV4NFHZDAUO}

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	2026-05-18T01:43:49.883430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

220acb0ad394689454e7af1a53e460a3adf701dd7ff27e51f00d5e374f88106e

Aliases

arxiv: 1403.7202 · arxiv_version: 1403.7202v2 · doi: 10.48550/arxiv.1403.7202 · pith_short_12: EIFMWCWTSRUJ · pith_short_16: EIFMWCWTSRUJIVHH · pith_short_8: EIFMWCWT

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/EIFMWCWTSRUJIVHHV4NFHZDAUO \
  | 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: 220acb0ad394689454e7af1a53e460a3adf701dd7ff27e51f00d5e374f88106e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c12fc04cf34e75726a5bc7adc933af5c03279bcdda9875e5fa6130e75e0fc98",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-03-27T20:00:17Z",
    "title_canon_sha256": "c9c97a6b7433d3cc6a422b94a45fb12a10253926c4030622ca47b103ecc27e09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.7202",
    "kind": "arxiv",
    "version": 2
  }
}