Pith Number

pith:PWQ6VB72

pith:2021:PWQ6VB72AAIQR7SQ3X5CFJZGDY

not attested not anchored not stored refs pending

Comet 2P/Encke in apparition of 2017: II. Polarization and color

Dmitry Petrov, Ludmilla Kolokolova, Nikolai Kiselev, Oleksandra Ivanova, Olena Shubina, Valeriy Kleshchonok, Vera Rosenbush, Viktor Afanasiev

arxiv:2101.04193 v1 · 2021-01-11 · 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{PWQ6VB72AAIQR7SQ3X5CFJZGDY}

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	2026-07-05T02:06:22.776881Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7da1ea87fa001108fe50ddfa22a7261e1a7374d93bb39f73266a8681b7e48117

Aliases

arxiv: 2101.04193 · arxiv_version: 2101.04193v1 · doi: 10.48550/arxiv.2101.04193 · pith_short_12: PWQ6VB72AAIQ · pith_short_16: PWQ6VB72AAIQR7SQ · pith_short_8: PWQ6VB72

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/PWQ6VB72AAIQR7SQ3X5CFJZGDY \
  | 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: 7da1ea87fa001108fe50ddfa22a7261e1a7374d93bb39f73266a8681b7e48117

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3f8bc01209ef078c81d235d1edae72ee8992fc3302130a7838a289f68dd85e8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2021-01-11T21:10:25Z",
    "title_canon_sha256": "14664e56bc395ec4b61390fe630bea5c6f780d033e4ffe69f5a716df594bfa80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.04193",
    "kind": "arxiv",
    "version": 1
  }
}