Pith Number

pith:R5VDGZFX

pith:2005:R5VDGZFXMXVMKT74SE3AZ75DFR

not attested not anchored not stored refs pending

Spectroscopic Observations and Analysis of the Unusual Type Ia SN 1999ac

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

arxiv:astro-ph/0507288 v1 · 2005-07-12 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R5VDGZFXMXVMKT74SE3AZ75DFR}

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	2026-05-18T03:47:43.472822Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f6a3364b765eac54ffc91360cffa32c73426dbe1bcfe7acdaf9a7f4d6f352b6

Aliases

arxiv: astro-ph/0507288 · arxiv_version: astro-ph/0507288v1 · doi: 10.48550/arxiv.astro-ph/0507288 · pith_short_12: R5VDGZFXMXVM · pith_short_16: R5VDGZFXMXVMKT74 · pith_short_8: R5VDGZFX

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/R5VDGZFXMXVMKT74SE3AZ75DFR \
  | 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: 8f6a3364b765eac54ffc91360cffa32c73426dbe1bcfe7acdaf9a7f4d6f352b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b2bbcc1d7f3a4281725f6f5b5802d906f6448177a3f3b2acc20dd05eb405197",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-07-12T14:04:54Z",
    "title_canon_sha256": "818dc88384818e88a39abda3e1fcb2c1848515f732f7801871c1aa226c249e35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0507288",
    "kind": "arxiv",
    "version": 1
  }
}