Pith Number

pith:KPY2Z4WF

pith:2018:KPY2Z4WFE4WXBW2JN6IK4RXZLD

not attested not anchored not stored refs pending

Surface effects on the red giant branch

N. Theme{\ss}l, S. Hekker, W. H. Ball

arxiv:1804.11153 v1 · 2018-04-30 · 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{KPY2Z4WFE4WXBW2JN6IK4RXZLD}

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	2026-05-18T00:15:54.383259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53f1acf2c5272d70db496f90ae46f958e28adaf6e0191cd3a33629620f1899c0

Aliases

arxiv: 1804.11153 · arxiv_version: 1804.11153v1 · doi: 10.48550/arxiv.1804.11153 · pith_short_12: KPY2Z4WFE4WX · pith_short_16: KPY2Z4WFE4WXBW2J · pith_short_8: KPY2Z4WF

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/KPY2Z4WFE4WXBW2JN6IK4RXZLD \
  | 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: 53f1acf2c5272d70db496f90ae46f958e28adaf6e0191cd3a33629620f1899c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa22be7a197838b5a3f437535da3edbad1afb5d0014edb0bddb714a17c7f232e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-04-30T12:26:38Z",
    "title_canon_sha256": "9c379f6d94931758862ecc765a58c2075d45568f414f7acbc855bd6d15af8251"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.11153",
    "kind": "arxiv",
    "version": 1
  }
}