Pith Number

pith:PNLKVGFP

pith:2011:PNLKVGFP3B4SRPPAK5ZVV56GKZ

not attested not anchored not stored refs pending

Quiet-Sun imaging asymmetries in NaI D1 compared with other strong Fraunhofer lines

A.G. de Wijn, J. Leenaarts, L.H.M. Rouppe van der Voort, M. Carlsson, R.J. Rutten, V. Hansteen

arxiv:1104.4307 v1 · 2011-04-21 · 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{PNLKVGFP3B4SRPPAK5ZVV56GKZ}

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	2026-05-18T02:02:16.675554Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b56aa98afd87928bde057735af7c6567ae3a47b86ca5162149c1e3d59ed340b

Aliases

arxiv: 1104.4307 · arxiv_version: 1104.4307v1 · doi: 10.48550/arxiv.1104.4307 · pith_short_12: PNLKVGFP3B4S · pith_short_16: PNLKVGFP3B4SRPPA · pith_short_8: PNLKVGFP

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/PNLKVGFP3B4SRPPAK5ZVV56GKZ \
  | 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: 7b56aa98afd87928bde057735af7c6567ae3a47b86ca5162149c1e3d59ed340b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d833340bc12de16983e81a053b21473842e7b0cca8f3fd8a7b8f9f034600180",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-04-21T16:34:35Z",
    "title_canon_sha256": "872de7364d9a599e546e0015719c40ca320617e559d81b5e4672171034355b1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4307",
    "kind": "arxiv",
    "version": 1
  }
}