Pith Number

pith:32C7T4Z2

pith:2011:32C7T4Z2YUIL36KSG277KRVYZE

not attested not anchored not stored refs pending

Solar cycle variation in Sun-as-a-star Ca II 854.2 nm bisectors

Anna Pietarila, William Livingston

arxiv:1105.3437 v1 · 2011-05-17 · 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{32C7T4Z2YUIL36KSG277KRVYZE}

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	2026-05-18T02:01:57.051778Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de85f9f33ac510bdf95236bff546b8c9365d6b225c36e2ee9d0da490c9dbe6b3

Aliases

arxiv: 1105.3437 · arxiv_version: 1105.3437v1 · doi: 10.48550/arxiv.1105.3437 · pith_short_12: 32C7T4Z2YUIL · pith_short_16: 32C7T4Z2YUIL36KS · pith_short_8: 32C7T4Z2

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/32C7T4Z2YUIL36KSG277KRVYZE \
  | 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: de85f9f33ac510bdf95236bff546b8c9365d6b225c36e2ee9d0da490c9dbe6b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "415c12bbbd412c641d7c7addfcf14621e5900c403dbaa027eb7c535432c4f6f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-05-17T17:18:17Z",
    "title_canon_sha256": "e1afa03de93ee7ddf1d97214733093d16932fc6e3e4e8157e7c4276865ea85cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.3437",
    "kind": "arxiv",
    "version": 1
  }
}