Pith Number

pith:VCCGI73M

pith:2013:VCCGI73MCWU72TJHU3N47EVJ6F

not attested not anchored not stored refs pending

Spot activity of the RS CVn star {\sigma} Geminorum

G.W. Henry, J. Lehtinen, L. Jetsu, P. Kajatkari, T. Hackman

arxiv:1311.1116 v1 · 2013-11-05 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VCCGI73MCWU72TJHU3N47EVJ6F}

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	2026-05-18T01:46:38.762634Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a884647f6c15a9fd4d27a6dbcf92a9f17993c35efd057caaffaa097171f44ba5

Aliases

arxiv: 1311.1116 · arxiv_version: 1311.1116v1 · doi: 10.48550/arxiv.1311.1116 · pith_short_12: VCCGI73MCWU7 · pith_short_16: VCCGI73MCWU72TJH · pith_short_8: VCCGI73M

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/VCCGI73MCWU72TJHU3N47EVJ6F \
  | 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: a884647f6c15a9fd4d27a6dbcf92a9f17993c35efd057caaffaa097171f44ba5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec678eaf472460878c3593a17b01793a3db4b9bb18b71d054bcfa0019b197349",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-11-05T16:57:24Z",
    "title_canon_sha256": "6e2b7ac077cdca2f7f33a9e84fad4b6b11feb8cdfb89040c8281dd9bbf5a0b6d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1116",
    "kind": "arxiv",
    "version": 1
  }
}