Pith Number

pith:CQQOFDO5

pith:2014:CQQOFDO5WND35XMHFGIUIVTBVC

not attested not anchored not stored refs pending

Delivery of dust grains from comet C/2013 A1 (Siding Spring) to Mars

Davide Farnocchia, James M. Bauer, Jian-Yang Li, Mark V. Sykes, Michael S.P. Kelley, Nalin H. Samarasinha, Pasquale Tricarico, Rachel Stevenson, Robert E. Lock, Tony L. Farnham

arxiv:1404.7168 v1 · 2014-04-28 · 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{CQQOFDO5WND35XMHFGIUIVTBVC}

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	2026-05-18T01:43:22.311770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1420e28dddb347bedd872991445661a8b1f5bc0dacdbc0234133e523fadad147

Aliases

arxiv: 1404.7168 · arxiv_version: 1404.7168v1 · doi: 10.48550/arxiv.1404.7168 · pith_short_12: CQQOFDO5WND3 · pith_short_16: CQQOFDO5WND35XMH · pith_short_8: CQQOFDO5

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/CQQOFDO5WND35XMHFGIUIVTBVC \
  | 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: 1420e28dddb347bedd872991445661a8b1f5bc0dacdbc0234133e523fadad147

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba75f8f9de82613c56fffca4ce3afa25c51e5d1960de7d91cf2ca8edb6cfc458",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2014-04-28T21:13:36Z",
    "title_canon_sha256": "c01f1e2c518dc2df6d5b1c7fd019d33f43db6a7afb0f5fd1811fa0f53a39d44c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.7168",
    "kind": "arxiv",
    "version": 1
  }
}