Pith Number

pith:TYYXEHCP

pith:2012:TYYXEHCP2OL6EE53QWZEO5E3OJ

not attested not anchored not stored refs pending

The Force-Free Electrodynamics Method for the Extrapolation of Coronal Magnetic Fields from Vector Magnetograms

Ioannis Contopoulos

arxiv:1209.5211 v2 · 2012-09-24 · 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{TYYXEHCP2OL6EE53QWZEO5E3OJ}

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	2026-05-18T01:54:19.624500Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e31721c4fd397e213bb85b247749b72502cb7f254f889091d05d5a90a5c27bc

Aliases

arxiv: 1209.5211 · arxiv_version: 1209.5211v2 · doi: 10.48550/arxiv.1209.5211 · pith_short_12: TYYXEHCP2OL6 · pith_short_16: TYYXEHCP2OL6EE53 · pith_short_8: TYYXEHCP

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/TYYXEHCP2OL6EE53QWZEO5E3OJ \
  | 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: 9e31721c4fd397e213bb85b247749b72502cb7f254f889091d05d5a90a5c27bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ef89eff4c22961835fa346e16fa7b7da7ca74b30400e866622c4a62e457797e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-09-24T09:53:52Z",
    "title_canon_sha256": "c24e00092163c1d38516be78a5ec4b6ce3837896b3ac16d3697e5baddf5a5c34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5211",
    "kind": "arxiv",
    "version": 2
  }
}