Pith Number

pith:KS7WH3TH

pith:2015:KS7WH3THLWZINF4SN3XZLO7OLT

not attested not anchored not stored refs pending

The pre-perihelion activity of dynamically new comet C/2013 A1 (Siding Spring) and its close encounter with Mars

Dennis Bodewits, Jian-Yang Li, Michael F. A'Hearn, Michael S.P. Kelley, Tony L. Farnham

arxiv:1502.07216 v1 · 2015-02-25 · 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{KS7WH3THLWZINF4SN3XZLO7OLT}

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	2026-05-18T01:40:54.536712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54bf63ee675db28697926eef95bbee5cda184d544ad3ec4307166fe5e6bfa78b

Aliases

arxiv: 1502.07216 · arxiv_version: 1502.07216v1 · doi: 10.48550/arxiv.1502.07216 · pith_short_12: KS7WH3THLWZI · pith_short_16: KS7WH3THLWZINF4S · pith_short_8: KS7WH3TH

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/KS7WH3THLWZINF4SN3XZLO7OLT \
  | 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: 54bf63ee675db28697926eef95bbee5cda184d544ad3ec4307166fe5e6bfa78b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68ae376e0c7f75c619615a480d0a1de65f1d481255f6ec3cdc5074b20052fb86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2015-02-25T15:57:21Z",
    "title_canon_sha256": "4297d4c4153c9467b91e36292c330017ced074980947675305c6d6fa3b3459dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.07216",
    "kind": "arxiv",
    "version": 1
  }
}