Pith Number

pith:NQCUAPEN

pith:2012:NQCUAPENVHL7ZKCVNKCAXCYTTN

not attested not anchored not stored refs pending

A Quarter-Century of Observations of Comet 10P/Tempel 2 at Lowell Observatory: Continued Spin-Down, Coma Morphology, Production Rates, and Numerical Modeling

David G. Schleicher, Edward W. Schwieterman, Matthew M. Knight, Samantha R. Christensen, Tony L. Farnham

arxiv:1210.1228 v1 · 2012-10-03 · 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{NQCUAPENVHL7ZKCVNKCAXCYTTN}

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	2026-05-18T01:54:10.887017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c05403c8da9d7fca8556a840b8b139b61b6992b05b0f87dd38aeae854866f96

Aliases

arxiv: 1210.1228 · arxiv_version: 1210.1228v1 · doi: 10.48550/arxiv.1210.1228 · pith_short_12: NQCUAPENVHL7 · pith_short_16: NQCUAPENVHL7ZKCV · pith_short_8: NQCUAPEN

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/NQCUAPENVHL7ZKCVNKCAXCYTTN \
  | 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: 6c05403c8da9d7fca8556a840b8b139b61b6992b05b0f87dd38aeae854866f96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8992871e11ab98a1c50cb738705676d88a0f89b6ccda01d33bf00955bfeff73",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-10-03T20:28:35Z",
    "title_canon_sha256": "cead2e9042e45c0c5f249305e0e0241bd196d7fc6cf8a5bc63dc255c3eff4cd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.1228",
    "kind": "arxiv",
    "version": 1
  }
}