Pith Number

pith:H2S46QGF

pith:2011:H2S46QGF753KOJFEIHCEL7TBFY

not attested not anchored not stored refs pending

Optical Variability and Colour Behaviour of 3C 345

Jianghua Wu, Jun Ma, Zhaoji Jiang, Zhou Xu

arxiv:1108.1020 v1 · 2011-08-04 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H2S46QGF753KOJFEIHCEL7TBFY}

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	2026-05-18T02:01:03.048708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ea5cf40c5ff76a724a441c445fe612e35efb0f7f8f02539886367524e31e822

Aliases

arxiv: 1108.1020 · arxiv_version: 1108.1020v1 · doi: 10.48550/arxiv.1108.1020 · pith_short_12: H2S46QGF753K · pith_short_16: H2S46QGF753KOJFE · pith_short_8: H2S46QGF

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/H2S46QGF753KOJFEIHCEL7TBFY \
  | 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: 3ea5cf40c5ff76a724a441c445fe612e35efb0f7f8f02539886367524e31e822

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5eec1fb83d6f64c45cad0b17166483e409d72d052d45f8a3fabf2bc2713f9ac",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-04T08:34:24Z",
    "title_canon_sha256": "2a924ca96e8530f767feaadd11951defd79fffd405206655f89043b61954fe74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.1020",
    "kind": "arxiv",
    "version": 1
  }
}