Pith Number

pith:DPKDV4QE

pith:2026:DPKDV4QEH2IVN6QVUM7FAKSCGS

not attested not anchored not stored refs pending

A comprehensive study of comet 67P/Churyumov-Gerasimenko in the 2021/2022 apparition. II. Colorimetry, polarimetry, modeling

Colin Snodgrass, Elena Shablovinskaya, Igor Lukyanyk, Johannes Markkanen, Ludmilla Kolokolova, Oleksandra Ivanova, Valerii Kleshchonok, Vera Rosenbush

arxiv:2607.20038 v1 · 2026-07-22 · 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{DPKDV4QEH2IVN6QVUM7FAKSCGS}

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	2026-07-23T01:24:56.879750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1bd43af2043e9156fa15a33e502a4234b3620f1ffd681d95486360d4e572763b

Aliases

arxiv: 2607.20038 · arxiv_version: 2607.20038v1 · doi: 10.48550/arxiv.2607.20038 · pith_short_12: DPKDV4QEH2IV · pith_short_16: DPKDV4QEH2IVN6QV · pith_short_8: DPKDV4QE

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/DPKDV4QEH2IVN6QVUM7FAKSCGS \
  | 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: 1bd43af2043e9156fa15a33e502a4234b3620f1ffd681d95486360d4e572763b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53a9e4e9823a29f678230530b5c1018a696db9382abe49452b68feeb351bf3f8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2026-07-22T11:26:48Z",
    "title_canon_sha256": "00827acb2f9deeb84a703ff0c76b951ec751cce9ff85092cb7755957b17f4224"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.20038",
    "kind": "arxiv",
    "version": 1
  }
}