Pith Number

pith:5YQJ2LMY

pith:1997:5YQJ2LMYWVCEERCFSCS3G3F2JG

not attested not anchored not stored refs pending

Formation of the Ring-like Structure in the SN 1987A Nebula due to the Magnetic Pressure of the Toroidal Field

(2)Yamagata University, (3)University of Tokyo), Haruichi Washimi(1), Masao Mori(3) ((1)Shonan Institute of Technology, Shinpei Shibata(2)

arxiv:astro-ph/9711271 v1 · 1997-11-22 · 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{5YQJ2LMYWVCEERCFSCS3G3F2JG}

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	2026-05-18T01:40:16.472296Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee209d2d98b54442444590a5b36cba49a8b5e04e4bfaab3ecea1b26ae6710f6d

Aliases

arxiv: astro-ph/9711271 · arxiv_version: astro-ph/9711271v1 · doi: 10.48550/arxiv.astro-ph/9711271 · pith_short_12: 5YQJ2LMYWVCE · pith_short_16: 5YQJ2LMYWVCEERCF · pith_short_8: 5YQJ2LMY

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/5YQJ2LMYWVCEERCFSCS3G3F2JG \
  | 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: ee209d2d98b54442444590a5b36cba49a8b5e04e4bfaab3ecea1b26ae6710f6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "924983eb81184488b596bdabb09cbc402924d3e62cd563833becc82a0c81e1d2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-11-22T16:16:30Z",
    "title_canon_sha256": "a8c09d015d515ef9fa2ce77ce1199be964e4c2b0b85e7c6e70d63b073356391a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9711271",
    "kind": "arxiv",
    "version": 1
  }
}