Pith Number

pith:2NK5LYS5

pith:2017:2NK5LYS5RYPU3GTHSWAFR7BPWV

not attested not anchored not stored refs pending

Sunspot Structure

Sanjiv K. Tiwari

arxiv:1712.07174 v2 · 2017-12-19 · 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{2NK5LYS5RYPU3GTHSWAFR7BPWV}

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	2026-05-18T00:03:00.202383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d355d5e25d8e1f4d9a67958058fc2fb565391084b1ada24472d6ad9098612f0f

Aliases

arxiv: 1712.07174 · arxiv_version: 1712.07174v2 · doi: 10.48550/arxiv.1712.07174 · pith_short_12: 2NK5LYS5RYPU · pith_short_16: 2NK5LYS5RYPU3GTH · pith_short_8: 2NK5LYS5

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/2NK5LYS5RYPU3GTHSWAFR7BPWV \
  | 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: d355d5e25d8e1f4d9a67958058fc2fb565391084b1ada24472d6ad9098612f0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d92c585251763c4a0f6eaf8d4d87bbb07212ab4537d2104bd0a8d2b11e2f5844",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-12-19T19:43:27Z",
    "title_canon_sha256": "2dfa81bf382cc23e94e5f2ec9d2ca6ae3227aba0cb0ac2cdecf5d0ee2127c280"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.07174",
    "kind": "arxiv",
    "version": 2
  }
}