Pith Number

pith:D74HONGV

pith:1999:D74HONGV5ZK6RKQX2ZWRZLYFAG

not attested not anchored not stored refs pending

X-ray Detection of SN1994W in NGC 4041?

Eric M. Schlegel (Harvard-Smithsonian Center for Astrophysics)

arxiv:astro-ph/9910425 v1 · 1999-10-22 · 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{D74HONGV5ZK6RKQX2ZWRZLYFAG}

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	2026-07-04T16:11:44.177243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ff87734d5ee55e8aa17d66d1caf05018bf9f1e7f34e28bbc622f244a34ed113

Aliases

arxiv: astro-ph/9910425 · arxiv_version: astro-ph/9910425v1 · doi: 10.48550/arxiv.astro-ph/9910425 · pith_short_12: D74HONGV5ZK6 · pith_short_16: D74HONGV5ZK6RKQX · pith_short_8: D74HONGV

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/D74HONGV5ZK6RKQX2ZWRZLYFAG \
  | 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: 1ff87734d5ee55e8aa17d66d1caf05018bf9f1e7f34e28bbc622f244a34ed113

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63756c4238bf8281db3c4025dcc1c5d928890a6faabf684c07be3c6aff2c876c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-10-22T18:25:34Z",
    "title_canon_sha256": "c2788ed3aa4f95d381ce8c1d4c3b8292e719db09d1f879e615ee486143ba01aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9910425",
    "kind": "arxiv",
    "version": 1
  }
}