Pith Number

pith:APQQHOOK

pith:2009:APQQHOOKEAP42ZRWQ7F2S2JKIU

not attested not anchored not stored refs pending

The Ejecta Distributions of the Heavy Elements in the Cygnus Loop

Hiroko Kosugi, Hiroshi Tsunemi, Hiroyuki Uchida, Masashi Kimura, Satoru Katsuda

arxiv:0901.3433 v1 · 2009-01-22 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{APQQHOOKEAP42ZRWQ7F2S2JKIU}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:14:56.281645Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03e103b9ca201fcd663687cba9692a450a7ff267f7ad781c76b1d0df1f3ebeee

Aliases

arxiv: 0901.3433 · arxiv_version: 0901.3433v1 · doi: 10.48550/arxiv.0901.3433 · pith_short_12: APQQHOOKEAP4 · pith_short_16: APQQHOOKEAP42ZRW · pith_short_8: APQQHOOK

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/APQQHOOKEAP42ZRWQ7F2S2JKIU \
  | 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: 03e103b9ca201fcd663687cba9692a450a7ff267f7ad781c76b1d0df1f3ebeee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c37a297b777ff30eca4c05d365e2e40da10c5e88ac4f9e1c2c6ba98fca0d77d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-01-22T09:06:00Z",
    "title_canon_sha256": "82552a07c21712051bdf76264d47fbfa672b47eec727db9616bec0f9f264f766"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.3433",
    "kind": "arxiv",
    "version": 1
  }
}