Pith Number

pith:Y3MAM3PW

pith:2009:Y3MAM3PWYOYUOID2OFXY7SW2W2

not attested not anchored not stored refs pending

The three-dimensional structure of sunspots II. The moat flow at two different heights

H. Balthasar, K. Muglach

arxiv:0912.3661 v1 · 2009-12-18 · 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{Y3MAM3PWYOYUOID2OFXY7SW2W2}

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	2026-05-18T02:33:55.966970Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6d8066df6c3b147207a716f8fcadab6baaea745d957d7123d3004757e55b31c

Aliases

arxiv: 0912.3661 · arxiv_version: 0912.3661v1 · doi: 10.48550/arxiv.0912.3661 · pith_short_12: Y3MAM3PWYOYU · pith_short_16: Y3MAM3PWYOYUOID2 · pith_short_8: Y3MAM3PW

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/Y3MAM3PWYOYUOID2OFXY7SW2W2 \
  | 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: c6d8066df6c3b147207a716f8fcadab6baaea745d957d7123d3004757e55b31c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "81eef409e1e98ef30ec253c98999c754f495ec6f71108f47ae50e6fcddacff07",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-12-18T12:34:07Z",
    "title_canon_sha256": "ef6e61b60f8ea04798f253d3157d9a9eeb1059f873dda8ece0fd81ac395d8734"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.3661",
    "kind": "arxiv",
    "version": 1
  }
}