Pith Number

pith:VDOQULFQ

pith:2012:VDOQULFQLQMXBLNAODFTDMVRAK

not attested not anchored not stored refs pending

Why do some young cool stars show spot modulation while others do not?

R. D. Jeffries (Keele University, R. J. Jackson, UK)

arxiv:1204.4066 v1 · 2012-04-18 · 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{VDOQULFQLQMXBLNAODFTDMVRAK}

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	2026-05-18T01:57:49.369363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8dd0a2cb05c1970ada070cb31b2b10282ef621dc678d8d8b920b87d5652a2f8

Aliases

arxiv: 1204.4066 · arxiv_version: 1204.4066v1 · doi: 10.48550/arxiv.1204.4066 · pith_short_12: VDOQULFQLQMX · pith_short_16: VDOQULFQLQMXBLNA · pith_short_8: VDOQULFQ

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/VDOQULFQLQMXBLNAODFTDMVRAK \
  | 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: a8dd0a2cb05c1970ada070cb31b2b10282ef621dc678d8d8b920b87d5652a2f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b42e547ce3232e9bf7ae40d2b96046a9aefb76b59c2440877aff13a2a95594ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-04-18T12:19:17Z",
    "title_canon_sha256": "407d910ae29de9c1a64b1086e9545ad6b25618aa3742cfe35079f06f7efae1b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4066",
    "kind": "arxiv",
    "version": 1
  }
}