Pith Number

pith:3LEAN3X3

pith:2013:3LEAN3X3W5J7SN7FQZV33GKU6S

not attested not anchored not stored refs pending

Debris discs around M stars: non-existence versus non-detection

Kevin Heng, Matej Malik

arxiv:1304.3125 v1 · 2013-04-10 · astro-ph.EP · 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{3LEAN3X3W5J7SN7FQZV33GKU6S}

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	2026-05-18T01:50:40.195961Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dac806eefbb753f937e5866bbd9954f489891b35ef94d79952400c25bc9634fb

Aliases

arxiv: 1304.3125 · arxiv_version: 1304.3125v1 · doi: 10.48550/arxiv.1304.3125 · pith_short_12: 3LEAN3X3W5J7 · pith_short_16: 3LEAN3X3W5J7SN7F · pith_short_8: 3LEAN3X3

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/3LEAN3X3W5J7SN7FQZV33GKU6S \
  | 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: dac806eefbb753f937e5866bbd9954f489891b35ef94d79952400c25bc9634fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "519aa76b28d6e9597bb291440f93559a372e76c1cd90e8a8ca24403091055556",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-04-10T20:00:03Z",
    "title_canon_sha256": "b78e1d8f4dcdceeb800c91d6ecf20b0bbedca6a28a32d6f6fc8e52afd3a847a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.3125",
    "kind": "arxiv",
    "version": 1
  }
}