Pith Number

pith:K3ITKXI6

pith:2010:K3ITKXI6EYGUU3LJ5BSFPULQB7

not attested not anchored not stored refs pending

Relating dust, gas and the rate of star formation in M31

E. M. Berkhuijsen, F. S. Tabatabaei

arxiv:1004.4306 v1 · 2010-04-24 · 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{K3ITKXI6EYGUU3LJ5BSFPULQB7}

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	2026-05-18T02:07:54.257115Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56d1355d1e260d4a6d69e86457d1700fef2e98008ad0d2c4fcabfeb1fd45e94b

Aliases

arxiv: 1004.4306 · arxiv_version: 1004.4306v1 · doi: 10.48550/arxiv.1004.4306 · pith_short_12: K3ITKXI6EYGU · pith_short_16: K3ITKXI6EYGUU3LJ · pith_short_8: K3ITKXI6

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/K3ITKXI6EYGUU3LJ5BSFPULQB7 \
  | 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: 56d1355d1e260d4a6d69e86457d1700fef2e98008ad0d2c4fcabfeb1fd45e94b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a37fbdd6d866a87003769fb992782f160f2c712f823a1a1efef0d20d51cbd3b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-04-24T19:27:42Z",
    "title_canon_sha256": "f33a5954aacbe0ac36c61c9b6d69b51547e2fc7efb931934d0b9a1d4f5676e01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.4306",
    "kind": "arxiv",
    "version": 1
  }
}