Pith Number

pith:M4V37ZC2

pith:2019:M4V37ZC2J37ZKNCHLAJG4O2JC7

not attested not anchored not stored refs pending

A young multipolar planetary nebula in the making: IRAS 21282+5050

Chih-Hao Hsia, Sun Kwok, Wayne Chau, Yong Zhang

arxiv:1902.08851 v1 · 2019-02-23 · astro-ph.SR · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M4V37ZC2J37ZKNCHLAJG4O2JC7}

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	2026-05-17T23:52:00.995202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

672bbfe45a4eff95344758126e3b4917cee5a463f3c4d53fd595ae2a030cdc86

Aliases

arxiv: 1902.08851 · arxiv_version: 1902.08851v1 · doi: 10.48550/arxiv.1902.08851 · pith_short_12: M4V37ZC2J37Z · pith_short_16: M4V37ZC2J37ZKNCH · pith_short_8: M4V37ZC2

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/M4V37ZC2J37ZKNCHLAJG4O2JC7 \
  | 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: 672bbfe45a4eff95344758126e3b4917cee5a463f3c4d53fd595ae2a030cdc86

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7488872aa1e685561b1a3cd281a2dc432a85829e8ba7b5bee680ed3d5a296b90",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-02-23T21:44:05Z",
    "title_canon_sha256": "ee304599ca7584931a8b2c83d38d797020687689c0e247a67380cb5f0ec20210"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.08851",
    "kind": "arxiv",
    "version": 1
  }
}