Pith Number

pith:QRXS5XAF

pith:2013:QRXS5XAFIW5ENE6ZIMP42ZX5ZN

not attested not anchored not stored refs pending

The Chelyabinsk superbolide: a fragment of asteroid 2011 EO40?

C. de la Fuente Marcos, R. de la Fuente Marcos

arxiv:1307.7918 v2 · 2013-07-30 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QRXS5XAFIW5ENE6ZIMP42ZX5ZN}

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	2026-05-18T03:04:37.461743Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

846f2edc0545ba4693d9431fcd66fdcb4576eef5c97f13fc2440dc8ac697991d

Aliases

arxiv: 1307.7918 · arxiv_version: 1307.7918v2 · doi: 10.48550/arxiv.1307.7918 · pith_short_12: QRXS5XAFIW5E · pith_short_16: QRXS5XAFIW5ENE6Z · pith_short_8: QRXS5XAF

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/QRXS5XAFIW5ENE6ZIMP42ZX5ZN \
  | 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: 846f2edc0545ba4693d9431fcd66fdcb4576eef5c97f13fc2440dc8ac697991d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "848b12fcb4126ee9ebcd9e89ea425d65bc11141fb03faa395e85dfaa148d8438",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-07-30T11:38:57Z",
    "title_canon_sha256": "8641d119f1bc1316864b9c69ecc6add1433415245dbcd0f43218c2aff4240b79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7918",
    "kind": "arxiv",
    "version": 2
  }
}