Pith Number

pith:4AIP4VKA

pith:2000:4AIP4VKALQZUAIM6ZLCSTYWOTH

not attested not anchored not stored refs pending

Circumstellar Nebulae in Young Supernova Remnants

Y.-H. Chu

arxiv:astro-ph/0012520 v1 · 2000-12-29 · 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{4AIP4VKALQZUAIM6ZLCSTYWOTH}

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	2026-07-04T16:17:51.083478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e010fe55405c3340219ecac529e2ce99cb852e719e9c9ae68511849f5b2f8a47

Aliases

arxiv: astro-ph/0012520 · arxiv_version: astro-ph/0012520v1 · doi: 10.48550/arxiv.astro-ph/0012520 · pith_short_12: 4AIP4VKALQZU · pith_short_16: 4AIP4VKALQZUAIM6 · pith_short_8: 4AIP4VKA

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/4AIP4VKALQZUAIM6ZLCSTYWOTH \
  | 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: e010fe55405c3340219ecac529e2ce99cb852e719e9c9ae68511849f5b2f8a47

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cafe2fe434b5805ee686f695a4fc5e429a5c15407a6b543751b8876be9a3756d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-12-29T02:58:46Z",
    "title_canon_sha256": "08bb965c9580a57b77daf5e070af64da6390916bf2fa1396e2a00630481e4ad4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0012520",
    "kind": "arxiv",
    "version": 1
  }
}