Pith Number

pith:UZMMY3Q3

pith:2012:UZMMY3Q36CC4AH3HHOXCUOMU2O

not attested not anchored not stored refs pending

A New Code for Nonlinear Force-Free Field Extrapolation of the Global Corona

Changqing Xiang, Chaowei Jiang, Xueshang Feng

arxiv:1206.1989 v1 · 2012-06-10 · 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{UZMMY3Q36CC4AH3HHOXCUOMU2O}

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	2026-05-18T01:57:00.309904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a658cc6e1bf085c01f673bae2a3994d398d3113e5e17a955d0c615f3e927f449

Aliases

arxiv: 1206.1989 · arxiv_version: 1206.1989v1 · doi: 10.48550/arxiv.1206.1989 · pith_short_12: UZMMY3Q36CC4 · pith_short_16: UZMMY3Q36CC4AH3H · pith_short_8: UZMMY3Q3

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/UZMMY3Q36CC4AH3HHOXCUOMU2O \
  | 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: a658cc6e1bf085c01f673bae2a3994d398d3113e5e17a955d0c615f3e927f449

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42cc006d30b8036317df80fe0f34842846ceca865fba1b172226126c77ab1a7f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-06-10T02:42:16Z",
    "title_canon_sha256": "2425be90eef8bf5531c4bd1957191e101c4487855faf71ce28f20822ac57b6e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.1989",
    "kind": "arxiv",
    "version": 1
  }
}