Pith Number

pith:2R4NK26X

pith:2016:2R4NK26XX2QFT5APFBC74UTC2U

not attested not anchored not stored refs pending

A study of solar photospheric temperature gradient variation using limb darkening measurements

Peter Foukal, Serena Criscuoli

arxiv:1611.10201 v1 · 2016-11-30 · 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{2R4NK26XX2QFT5APFBC74UTC2U}

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	2026-05-18T00:52:13.598338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d478d56bd7bea059f40f2845fe5262d512287b7e45a03836f153a99166b68424

Aliases

arxiv: 1611.10201 · arxiv_version: 1611.10201v1 · doi: 10.48550/arxiv.1611.10201 · pith_short_12: 2R4NK26XX2QF · pith_short_16: 2R4NK26XX2QFT5AP · pith_short_8: 2R4NK26X

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/2R4NK26XX2QFT5APFBC74UTC2U \
  | 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: d478d56bd7bea059f40f2845fe5262d512287b7e45a03836f153a99166b68424

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f22027c8968e2a674675d3105e04dcb36de159e95bde96d54f809a3fa569192",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-11-30T15:02:44Z",
    "title_canon_sha256": "4e84fd7db77d036c6b6f3cc24eda826fed74d5c8c7452f65a131c192e1807c99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.10201",
    "kind": "arxiv",
    "version": 1
  }
}