Pith Number

pith:VL7QBVGY

pith:2018:VL7QBVGYQDLR2LG7D6XYNPGQUL

not attested not anchored not stored refs pending

The problem of the height dependence of magnetic fields in sunspots

Horst Balthasar

arxiv:1808.06426 v1 · 2018-08-20 · 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{VL7QBVGYQDLR2LG7D6XYNPGQUL}

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	2026-05-18T00:07:05.369736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aaff00d4d880d71d2cdf1faf86bcd0a2c72fa5e87c3be61810d705ca199ab11c

Aliases

arxiv: 1808.06426 · arxiv_version: 1808.06426v1 · doi: 10.48550/arxiv.1808.06426 · pith_short_12: VL7QBVGYQDLR · pith_short_16: VL7QBVGYQDLR2LG7 · pith_short_8: VL7QBVGY

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/VL7QBVGYQDLR2LG7D6XYNPGQUL \
  | 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: aaff00d4d880d71d2cdf1faf86bcd0a2c72fa5e87c3be61810d705ca199ab11c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a0f5dfba675a07e6f28954be8b44f482d232d1dd88e2c478f5fdd53b12a5da1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-08-20T12:46:29Z",
    "title_canon_sha256": "1a5058caab9f70f8d69f19e5f139866ba274c33e6e7a461a4b3314f71f6528ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.06426",
    "kind": "arxiv",
    "version": 1
  }
}