Pith Number

pith:U7TYOUX2

pith:2018:U7TYOUX2XDQD7MOKSPYN362WU5

not attested not anchored not stored refs pending

Measuring the Wilson depression of sunspots using the divergence-free condition of the magnetic field vector

A. Lagg, B. L\"optien, M. van Noort, S. K. Solanki

arxiv:1808.06867 v1 · 2018-08-21 · 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{U7TYOUX2XDQD7MOKSPYN362WU5}

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	2026-05-18T00:01:28.688376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7e78752fab8e03fb1ca93f0ddfb56a771bbad7b2f473c18eeb4330ebc10804e

Aliases

arxiv: 1808.06867 · arxiv_version: 1808.06867v1 · doi: 10.48550/arxiv.1808.06867 · pith_short_12: U7TYOUX2XDQD · pith_short_16: U7TYOUX2XDQD7MOK · pith_short_8: U7TYOUX2

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/U7TYOUX2XDQD7MOKSPYN362WU5 \
  | 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: a7e78752fab8e03fb1ca93f0ddfb56a771bbad7b2f473c18eeb4330ebc10804e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24f11817d6526ce4669cb50cf4dd1070d8ecf66ea733beabae2efbc2239c65bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-08-21T12:25:57Z",
    "title_canon_sha256": "96fa1334cb081e9f651c5183e268ef298e4d0b6f1bcd211d2b6d4c94220de2b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.06867",
    "kind": "arxiv",
    "version": 1
  }
}