Pith Number

pith:FWD4EJRQ

pith:2019:FWD4EJRQV2JKQ4AFMZPW4S3DQE

not attested not anchored not stored refs pending

The Observational Evidence for the Internal Excitation of Sunspot Oscillations Inferred from the Fe I 5435 A Line

Eun-Kyung Lim, Heesu Yang, Jongchul Chae, Kyuhyoun Cho

arxiv:1906.01971 v1 · 2019-06-05 · 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{FWD4EJRQV2JKQ4AFMZPW4S3DQE}

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	2026-05-17T23:40:31.501176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d87c22630ae92a87005665f6e4b6381194903fe50be6fe550e6e7612e1cab49

Aliases

arxiv: 1906.01971 · arxiv_version: 1906.01971v1 · doi: 10.48550/arxiv.1906.01971 · pith_short_12: FWD4EJRQV2JK · pith_short_16: FWD4EJRQV2JKQ4AF · pith_short_8: FWD4EJRQ

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/FWD4EJRQV2JKQ4AFMZPW4S3DQE \
  | 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: 2d87c22630ae92a87005665f6e4b6381194903fe50be6fe550e6e7612e1cab49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8ded509d199c3115cf9a45b67c6e663d045e168d4bd52d410e2a9136b57c111",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-06-05T12:25:39Z",
    "title_canon_sha256": "7b997ccf0851891e1ef23fdc104a63aedcb8ac18a652dc3d18436571aad32738"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.01971",
    "kind": "arxiv",
    "version": 1
  }
}