Pith Number

pith:UIH3E5XQ

pith:2012:UIH3E5XQKSYWDEZJMOA67KEN66

not attested not anchored not stored refs pending

The formation of the Halpha line in the solar chromosphere

Jorrit Leenaarts, Luc Rouppe van der Voort, Mats Carlsson

arxiv:1202.1926 v1 · 2012-02-09 · 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{UIH3E5XQKSYWDEZJMOA67KEN66}

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	2026-05-18T01:58:31.907546Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a20fb276f054b16193296381efa88df7b95bc4b086e15d5b1d7b99dc465607af

Aliases

arxiv: 1202.1926 · arxiv_version: 1202.1926v1 · doi: 10.48550/arxiv.1202.1926 · pith_short_12: UIH3E5XQKSYW · pith_short_16: UIH3E5XQKSYWDEZJ · pith_short_8: UIH3E5XQ

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/UIH3E5XQKSYWDEZJMOA67KEN66 \
  | 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: a20fb276f054b16193296381efa88df7b95bc4b086e15d5b1d7b99dc465607af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffca0660e5bd8212d64381d10996b0d800d30a403d4ff955d1a3a88027eb32fc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-02-09T09:30:36Z",
    "title_canon_sha256": "7aec0b61e38d7c45cd9b9f3c18f0f46b5efae1304c730278b0c751cbc87fa7ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1926",
    "kind": "arxiv",
    "version": 1
  }
}