Pith Number

pith:NGYZ7HJZ

pith:2018:NGYZ7HJZ7HOLG4RUFCWY53IL3O

not attested not anchored not stored refs pending

Influence of metallicity on the near-surface effect on oscillation frequencies

E. Caffau, H.-G. Ludwig, J. P. C. Marques, K. Belkacem, L. Manchon, R. Samadi, T. Sonoi

arxiv:1809.08904 v2 · 2018-09-24 · 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{NGYZ7HJZ7HOLG4RUFCWY53IL3O}

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	2026-05-17T23:59:04.985583Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69b19f9d39f9dcb3723428ad8eed0bdb964fa563fe9d8631d91c340107660bbb

Aliases

arxiv: 1809.08904 · arxiv_version: 1809.08904v2 · doi: 10.48550/arxiv.1809.08904 · pith_short_12: NGYZ7HJZ7HOL · pith_short_16: NGYZ7HJZ7HOLG4RU · pith_short_8: NGYZ7HJZ

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/NGYZ7HJZ7HOLG4RUFCWY53IL3O \
  | 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: 69b19f9d39f9dcb3723428ad8eed0bdb964fa563fe9d8631d91c340107660bbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "602a2c44c577abb06dea982d71c1646f2a5bbfbcc861ec4f010a80e4bea79bcc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-09-24T13:32:59Z",
    "title_canon_sha256": "0e41029d9bb03038f42e866de9c732b3bb6bed47ac05f83b8f10db26fcc181df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.08904",
    "kind": "arxiv",
    "version": 2
  }
}