Pith Number

pith:3NRA7CFB

pith:2002:3NRA7CFBBDW4GHK4KIVTW4VPR7

not attested not anchored not stored refs pending

Photometry and Spectroscopy of the Type IIP SN 1999em from Outburst to Dust Formation

A.Elmhamdi, A.Pastorello, E.Cappellaro, F.Patat, G.Altavilla, I.J.Danziger, M.Salvo, M.Turatto, N.Chugai, S.Benetti

arxiv:astro-ph/0209623 v1 · 2002-09-30 · 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{3NRA7CFBBDW4GHK4KIVTW4VPR7}

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	2026-05-18T04:12:01.166024Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db620f88a108edc31d5c522b3b72af8fc8ea8475fe50b3669c1572d01c4810b0

Aliases

arxiv: astro-ph/0209623 · arxiv_version: astro-ph/0209623v1 · doi: 10.48550/arxiv.astro-ph/0209623 · pith_short_12: 3NRA7CFBBDW4 · pith_short_16: 3NRA7CFBBDW4GHK4 · pith_short_8: 3NRA7CFB

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/3NRA7CFBBDW4GHK4KIVTW4VPR7 \
  | 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: db620f88a108edc31d5c522b3b72af8fc8ea8475fe50b3669c1572d01c4810b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc1f502bda4649b008b25fae8ab45cfdc1239681802d593ac01294f817953128",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-09-30T15:36:59Z",
    "title_canon_sha256": "3bc94f8fafba85918ea633c29f765ecf58a994e4e26df520aead6f3f9c454099"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0209623",
    "kind": "arxiv",
    "version": 1
  }
}