Pith Number

pith:2F3QQLQZ

pith:2004:2F3QQLQZU53IGALQYSKLQ2AQCW

not attested not anchored not stored refs pending

Spectroscopic Observations and Analysis of the Peculiar SN 1999aa

A. Amadon, A. Conley, A. G. Kim, A. Goobar, A. L. Spadafora, A. Mourao, B. C. Lee, B. E. Schaefer, B. Frye, B. Goldman, C. Balland, C. Lidman, D. A. Howell, D. E. Groom, D. Hardin, D. Kasen, E. L. Gates, E. Smith, G. Aldering, G. Blanc, G. Folatelli, G. Garavini, G. Goldhaber, G. J. Miller, G. Sainton, G. T. Richards, H. Newberg, I. M. Hook, J. Haissinski, J. Mendez, J. Raux, J. Rich, K. Schahmaneche, L. Wang, M. Moniez, M. S. Burns, N. A. Walton, N. Regnault, O. Perdereau, P. Astier, P. E. Nugent, P. Ruiz-Lapuente, R. A. Knop, R. Amanullah, R. Ellis, R. Gibbons, R. Pain, R. Quimby, S. E. Deustua, S. Fabbro, S. Kent, S. Nobili, S. Perlmutter, T. Dahlen, V. Prasad, V. Stanishev, W. M. Wood-Vasey (The Supernova Cosmology Project), X. Fan

arxiv:astro-ph/0404393 v1 · 2004-04-20 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2F3QQLQZU53IGALQYSKLQ2AQCW}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:22:03.758790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d177082e19a776830170c494b8681015b13f81615bb394092ac4b6bdd020a447

Aliases

arxiv: astro-ph/0404393 · arxiv_version: astro-ph/0404393v1 · doi: 10.48550/arxiv.astro-ph/0404393 · pith_short_12: 2F3QQLQZU53I · pith_short_16: 2F3QQLQZU53IGALQ · pith_short_8: 2F3QQLQZ

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/2F3QQLQZU53IGALQYSKLQ2AQCW \
  | 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: d177082e19a776830170c494b8681015b13f81615bb394092ac4b6bdd020a447

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6fff08993ab7ba4c6322f111c6ac6dbcfa1ae3308cf1315aaf30e54d6bc5c77",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-04-20T19:35:12Z",
    "title_canon_sha256": "1854431b725ba28f65bfe81f844ee6ab472a95dfb1a26b817c9e443493832443"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0404393",
    "kind": "arxiv",
    "version": 1
  }
}