Pith Number

pith:377IM6F2

pith:2016:377IM6F2C6NC43GLKT5WQYX2FH

not attested not anchored not stored refs pending

Tests of sunspot number sequences: 4. Discontinuities around 1946 in various sunspot number and sunspot group number reconstructions

Luke A. Barnard, Mathew J. Owens, Mike Lockwood

arxiv:1605.05149 v1 · 2016-05-17 · 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{377IM6F2C6NC43GLKT5WQYX2FH}

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	2026-05-18T01:03:18.970497Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dffe8678ba179a2e6ccb54fb6862fa29df2fc32044190b6ac879bc6a86753966

Aliases

arxiv: 1605.05149 · arxiv_version: 1605.05149v1 · doi: 10.48550/arxiv.1605.05149 · pith_short_12: 377IM6F2C6NC · pith_short_16: 377IM6F2C6NC43GL · pith_short_8: 377IM6F2

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/377IM6F2C6NC43GLKT5WQYX2FH \
  | 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: dffe8678ba179a2e6ccb54fb6862fa29df2fc32044190b6ac879bc6a86753966

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b39128aeb13b6b18954380fb5c6a57763a061488ea339c8f1564c86332ebc12",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-05-17T13:05:49Z",
    "title_canon_sha256": "32bdc8156aedc59114d93a552eb12a0b3c4f20f15e7ead3a4d9fab216375c68e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.05149",
    "kind": "arxiv",
    "version": 1
  }
}