Pith Number

pith:YDVUHBN7

pith:2011:YDVUHBN7HARHUHQ3SAAXDIWIAT

not attested not anchored not stored refs pending

Long-term magnetic activity of a sample of M-dwarf stars from the HARPS program I. Comparison of activity indices

J. Gomes da Silva, N.C. Santos, S. Udry, T. Forveille, X. Bonfils, X. Delfosse

arxiv:1109.0321 v1 · 2011-09-01 · astro-ph.SR · 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{YDVUHBN7HARHUHQ3SAAXDIWIAT}

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	2026-05-18T04:14:16.028966Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0eb4385bf38227a1e1b900171a2c804ef9e0d759b57710daa2ec0fdc2f0e04f

Aliases

arxiv: 1109.0321 · arxiv_version: 1109.0321v1 · doi: 10.48550/arxiv.1109.0321 · pith_short_12: YDVUHBN7HARH · pith_short_16: YDVUHBN7HARHUHQ3 · pith_short_8: YDVUHBN7

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/YDVUHBN7HARHUHQ3SAAXDIWIAT \
  | 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: c0eb4385bf38227a1e1b900171a2c804ef9e0d759b57710daa2ec0fdc2f0e04f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7eadf8772ba57259d070f232ae6e430cad2c466510effe91205cd0600b9eb2b7",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-09-01T22:48:41Z",
    "title_canon_sha256": "e56ba753e7b2187ef9b21c2b2c26341af4a6922abb70e78de7a4916a4495a05f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0321",
    "kind": "arxiv",
    "version": 1
  }
}