Pith Number

pith:NRT3S7U4

pith:2001:NRT3S7U4OZYF2ZQBAVIDOZRXQ2

not attested not anchored not stored refs pending

Radioactivities and nucleosynthesis in SN 1987A

Cecilia Kozma, Claes Fransson

arxiv:astro-ph/0112405 v1 · 2001-12-17 · 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{NRT3S7U4OZYF2ZQBAVIDOZRXQ2}

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	2026-05-18T01:40:43.575691Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c67b97e9c76705d66010550376637868ff840b8501bb9e69986b11569fab872

Aliases

arxiv: astro-ph/0112405 · arxiv_version: astro-ph/0112405v1 · doi: 10.48550/arxiv.astro-ph/0112405 · pith_short_12: NRT3S7U4OZYF · pith_short_16: NRT3S7U4OZYF2ZQB · pith_short_8: NRT3S7U4

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/NRT3S7U4OZYF2ZQBAVIDOZRXQ2 \
  | 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: 6c67b97e9c76705d66010550376637868ff840b8501bb9e69986b11569fab872

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ca007d6bf77b403a503fd95e9daebf33cefa164fb0d3bd1003ed0569b88c8be",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-12-17T19:55:18Z",
    "title_canon_sha256": "e296fcf0a1aaf7ac2d10e96667c2702c13dd395f74f27e3644052c6e006138da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0112405",
    "kind": "arxiv",
    "version": 1
  }
}