Pith Number

pith:6SARJ27E

pith:2001:6SARJ27EKSJJXQMOA4ANM3YVJ4

not attested not anchored not stored refs pending

The nature of the progenitor of the Type II-P supernova 1999em

C. A. Tout, G. F. Gilmore, S. J. Smartt, S. T. Hodgkin (IoA, University of Cambridge)

arxiv:astro-ph/0107499 v2 · 2001-07-26 · 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{6SARJ27EKSJJXQMOA4ANM3YVJ4}

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	2026-07-04T16:23:46.141240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f48114ebe454929bc18e0700d66f154f0ecd8b164524bfcd0749f1692672e75b

Aliases

arxiv: astro-ph/0107499 · arxiv_version: astro-ph/0107499v2 · doi: 10.48550/arxiv.astro-ph/0107499 · pith_short_12: 6SARJ27EKSJJ · pith_short_16: 6SARJ27EKSJJXQMO · pith_short_8: 6SARJ27E

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/6SARJ27EKSJJXQMOA4ANM3YVJ4 \
  | 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: f48114ebe454929bc18e0700d66f154f0ecd8b164524bfcd0749f1692672e75b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0ae5ed46730cf67bb97904b3d6003db4bf2c92a148ee150d78c28dcbbd1bc76",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-26T09:05:30Z",
    "title_canon_sha256": "91c3a84fc1ddb6ba9d348b410490fa3df4a691b53d79e608fa244e2d0aa39af6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107499",
    "kind": "arxiv",
    "version": 2
  }
}