Pith Number

pith:Q2BGNPC4

pith:2013:Q2BGNPC4CQZXRONSAH5Z2CK75V

not attested not anchored not stored refs pending

Lunar polar craters -- icy, rough or just sloping?

David A. Lane, David Smith, Luis F. A. Teodoro, Sarah A. Bartram, Vincent R. Eke

arxiv:1312.4749 v2 · 2013-12-17 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q2BGNPC4CQZXRONSAH5Z2CK75V}

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	2026-05-18T02:44:31.548269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

868266bc5c143378b9b201fb9d095fed770ce3883d56b83bfa3516b3ba595c79

Aliases

arxiv: 1312.4749 · arxiv_version: 1312.4749v2 · doi: 10.48550/arxiv.1312.4749 · pith_short_12: Q2BGNPC4CQZX · pith_short_16: Q2BGNPC4CQZXRONS · pith_short_8: Q2BGNPC4

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/Q2BGNPC4CQZXRONSAH5Z2CK75V \
  | 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: 868266bc5c143378b9b201fb9d095fed770ce3883d56b83bfa3516b3ba595c79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b740ef34415bb1c25440c280d3cbd7e728f1dd3b818744204082c5f8e2858d6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-12-17T12:39:19Z",
    "title_canon_sha256": "955e97aa9b0bbd5ee824da51e0e6e2c71747029f6411aa2c255e2d10ce040af3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.4749",
    "kind": "arxiv",
    "version": 2
  }
}