Pith Number

pith:D6NR7RN2

pith:2013:D6NR7RN2GLJDHHM6BPLWSQRZ2Y

not attested not anchored not stored refs pending

Chromospheric Sunspot Oscillations in H-alpha and Ca II 8542A

Donguk Song, Heesu Yang, Hyungmin Park, Jongchul Chae, Kyuhyoun Cho, Ram Ajor Maurya

arxiv:1302.1234 v1 · 2013-02-06 · 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{D6NR7RN2GLJDHHM6BPLWSQRZ2Y}

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	2026-05-18T03:34:24.810748Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f9b1fc5ba32d2339d9e0bd7694239d629620dfcfb5384013e206ee4ea3695a2

Aliases

arxiv: 1302.1234 · arxiv_version: 1302.1234v1 · doi: 10.48550/arxiv.1302.1234 · pith_short_12: D6NR7RN2GLJD · pith_short_16: D6NR7RN2GLJDHHM6 · pith_short_8: D6NR7RN2

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/D6NR7RN2GLJDHHM6BPLWSQRZ2Y \
  | 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: 1f9b1fc5ba32d2339d9e0bd7694239d629620dfcfb5384013e206ee4ea3695a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7c7a40fe83f7cf811e6e39a201629c19ed88494a880ba7ad990d48432a39aff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-02-06T00:18:12Z",
    "title_canon_sha256": "880e0d818dee78e0264bcd3072f460e9c32b01938b5d8b59caad093ae26ec99a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.1234",
    "kind": "arxiv",
    "version": 1
  }
}