Pith Number

pith:V6JVQ45K

pith:2009:V6JVQ45KSO4PKF7WSFYJ4WOCT5

not attested not anchored not stored refs pending

Cosmic rays in galaxies: a probe of star formation

Massimo Persic (INAF+INFN, Trieste), UC San Diego), Yoel Rephaeli (Tel Aviv U.

arxiv:0912.4156 v2 · 2009-12-21 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V6JVQ45KSO4PKF7WSFYJ4WOCT5}

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	2026-05-18T02:33:55.794972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af935873aa93b8f517f691709e59c29f75f53d07b4e2d5d8a02b05bbc058a341

Aliases

arxiv: 0912.4156 · arxiv_version: 0912.4156v2 · doi: 10.48550/arxiv.0912.4156 · pith_short_12: V6JVQ45KSO4P · pith_short_16: V6JVQ45KSO4PKF7W · pith_short_8: V6JVQ45K

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/V6JVQ45KSO4PKF7WSFYJ4WOCT5 \
  | 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: af935873aa93b8f517f691709e59c29f75f53d07b4e2d5d8a02b05bbc058a341

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e58f745dddd79636e635b3d9ffbcaa12212d0f9063868973a6abade34d986372",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-12-21T13:01:35Z",
    "title_canon_sha256": "3530374f1f4bf0845dcb739506416b1bbeefeb89820e9a0305e2e51be3c2508a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4156",
    "kind": "arxiv",
    "version": 2
  }
}