Pith Number

pith:J2QZVFY4

pith:2016:J2QZVFY4IIFIBUYRKNRO3WHCHR

not attested not anchored not stored refs pending

Starspot signature on the light curve: Learning about the latitudinal distribution of spots

A. R. G. Santos, M. S. Cunha, P. P. Avelino, R. A. Garc\'ia, S. Mathur

arxiv:1611.07461 v1 · 2016-11-22 · 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{J2QZVFY4IIFIBUYRKNRO3WHCHR}

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	2026-05-18T00:50:18.049799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ea19a971c420a80d3115362edd8e23c5d9f4ee7ac9cb7693826c79a2944e4aa

Aliases

arxiv: 1611.07461 · arxiv_version: 1611.07461v1 · doi: 10.48550/arxiv.1611.07461 · pith_short_12: J2QZVFY4IIFI · pith_short_16: J2QZVFY4IIFIBUYR · pith_short_8: J2QZVFY4

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/J2QZVFY4IIFIBUYRKNRO3WHCHR \
  | 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: 4ea19a971c420a80d3115362edd8e23c5d9f4ee7ac9cb7693826c79a2944e4aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8db893211158156e57b4976fbd76610b512ef8ea8ae4f7170d2ea8b54e69be29",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-11-22T18:53:45Z",
    "title_canon_sha256": "2d97e2cbea52bd4b1fb3e6f3af246330d0eb62df060f1ee4bc745e3b493d8d95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.07461",
    "kind": "arxiv",
    "version": 1
  }
}