Pith Number

pith:ZGWWP7QB

pith:2006:ZGWWP7QBKF7FUIKW2KT6WON4LY

not attested not anchored not stored refs pending

Optical and Near-Infrared Observations of the Peculiar Type Ia Supernova 1999ac

A. E. Firth, A. L. Hungerford, C. Muena, C. Stubbs, D. Gonzalez, D. L. DePoy, E. Labbe, G. Galaz, J. Espinoza, Kevin Krisciunas, L. Germany, L.-G. Strolger, Mark M. Phillips, M. Bonati, M. G. Beckett, M. Hamuy, M. Roth, M. T. Ruiz, N. C. Hastings, Nicholas B. Suntzeff, P. Candia, P. J. McCarthy, R. C. Smith, R. G. Abraham, R. G. McMahon, R. McMillan, R. O. Marzke, R. Smith, S. E. Persson, T. M. Corwin, V. D. Ivanov, W. L. Freedman

arxiv:astro-ph/0601684 v1 · 2006-01-30 · 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{ZGWWP7QBKF7FUIKW2KT6WON4LY}

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	2026-07-04T15:31:21.090306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9ad67fe01517e5a2156d2a7eb39bc5e0aad2f33a7afd81a4dfc4554bcbd2ac6

Aliases

arxiv: astro-ph/0601684 · arxiv_version: astro-ph/0601684v1 · doi: 10.48550/arxiv.astro-ph/0601684 · pith_short_12: ZGWWP7QBKF7F · pith_short_16: ZGWWP7QBKF7FUIKW · pith_short_8: ZGWWP7QB

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/ZGWWP7QBKF7FUIKW2KT6WON4LY \
  | 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: c9ad67fe01517e5a2156d2a7eb39bc5e0aad2f33a7afd81a4dfc4554bcbd2ac6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35c5d98d4dbd47f1fd071ce783ea9bed41f592dd07960319c344c512bb30655c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-01-30T15:08:14Z",
    "title_canon_sha256": "6b6b72538374185121c6c9de54e10e7aa6554fb4b4e505b578e887223e93985e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0601684",
    "kind": "arxiv",
    "version": 1
  }
}