Pith Number

pith:APRH6ZMI

pith:2016:APRH6ZMIZOL4U25KWE3JZZQIN2

not attested not anchored not stored refs pending

Tests of Sunspot Number Sequences: 2. Using Geomagnetic and Auroral Data

Chris J. Scott, Heikki Nevanlinna, Ilya G. Usoskin, Luke A Barnard, Mathew J. Owens, Mike Lockwood

arxiv:1605.01948 v1 · 2016-05-06 · 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{APRH6ZMIZOL4U25KWE3JZZQIN2}

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	2026-05-18T01:11:47.973549Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03e27f6588cb97ca6baab1369ce6086eb3114827241cf5ec61ab0a33a8444eb5

Aliases

arxiv: 1605.01948 · arxiv_version: 1605.01948v1 · doi: 10.48550/arxiv.1605.01948 · pith_short_12: APRH6ZMIZOL4 · pith_short_16: APRH6ZMIZOL4U25K · pith_short_8: APRH6ZMI

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/APRH6ZMIZOL4U25KWE3JZZQIN2 \
  | 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: 03e27f6588cb97ca6baab1369ce6086eb3114827241cf5ec61ab0a33a8444eb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "051a0e3e28060596fa6b6a6f5fb51f95e9b4169a57c77edc3dfdc9898f8fa2fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-05-06T14:25:53Z",
    "title_canon_sha256": "29be97b128aa3e8fa6d970619f77b9cf0d15725b84922ac701d7a0a2ee4befb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.01948",
    "kind": "arxiv",
    "version": 1
  }
}