Pith Number

pith:QD5CYQEQ

pith:2011:QD5CYQEQTRYCXF7P5OWT2GE36B

not attested not anchored not stored refs pending

Magnetic Structure of Sunspots

J.M. Borrero, K. Ichimoto

arxiv:1109.4412 v1 · 2011-09-20 · 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{QD5CYQEQTRYCXF7P5OWT2GE36B}

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	2026-05-18T02:00:27.536336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80fa2c40909c702b97efebad3d189bf07396979e0a21052b2123ffa7f5d87007

Aliases

arxiv: 1109.4412 · arxiv_version: 1109.4412v1 · doi: 10.48550/arxiv.1109.4412 · pith_short_12: QD5CYQEQTRYC · pith_short_16: QD5CYQEQTRYCXF7P · pith_short_8: QD5CYQEQ

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/QD5CYQEQTRYCXF7P5OWT2GE36B \
  | 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: 80fa2c40909c702b97efebad3d189bf07396979e0a21052b2123ffa7f5d87007

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7f1147d228ab4e1c726c256c68c58703deef3563e4d8b975f1f861e732635c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-09-20T15:44:08Z",
    "title_canon_sha256": "1ccd63c52431b0e742c79a7daba8ac1ff6bf5c7e66e36367be243b81f2c2564a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4412",
    "kind": "arxiv",
    "version": 1
  }
}