Pith Number

pith:N2PPOVVZ

pith:2010:N2PPOVVZQ5SUKZ34FM3CD4W55S

not attested not anchored not stored refs pending

Mapping the Recent Star Formation History of the Disk of M51

Catherine C. Kaleida, Paul A. Scowen

arxiv:1006.1954 v1 · 2010-06-10 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N2PPOVVZQ5SUKZ34FM3CD4W55S}

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	2026-05-18T02:06:55.290268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e9ef756b9876545677c2b3621f2ddecba672f8a26fa017d2523ed0bcae36210

Aliases

arxiv: 1006.1954 · arxiv_version: 1006.1954v1 · doi: 10.48550/arxiv.1006.1954 · pith_short_12: N2PPOVVZQ5SU · pith_short_16: N2PPOVVZQ5SUKZ34 · pith_short_8: N2PPOVVZ

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/N2PPOVVZQ5SUKZ34FM3CD4W55S \
  | 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: 6e9ef756b9876545677c2b3621f2ddecba672f8a26fa017d2523ed0bcae36210

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1da994c455b4c598669e4f582bf8ba2670007e020ad66a707e5859e91f73ae3e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-06-10T05:57:13Z",
    "title_canon_sha256": "c2214a07b2404174710b00386cff9be040729a178fc54a71a37612c576525602"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.1954",
    "kind": "arxiv",
    "version": 1
  }
}