Pith Number

pith:36QQ7RH6

pith:2013:36QQ7RH6GT7Y7BYW6Y47SMCKWM

not attested not anchored not stored refs pending

Temporal Evolution of Sunspot Areas and Estimation of Related Plasma Flows

C.C. Fonte, J. Fernandes, M.A. Pais, R. Gafeira

arxiv:1310.7221 v1 · 2013-10-27 · 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{36QQ7RH6GT7Y7BYW6Y47SMCKWM}

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	2026-05-18T03:08:45.907366Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfa10fc4fe34ff8f8716f639f9304ab338d72e2be135744d79c33de36975dbeb

Aliases

arxiv: 1310.7221 · arxiv_version: 1310.7221v1 · doi: 10.48550/arxiv.1310.7221 · pith_short_12: 36QQ7RH6GT7Y · pith_short_16: 36QQ7RH6GT7Y7BYW · pith_short_8: 36QQ7RH6

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/36QQ7RH6GT7Y7BYW6Y47SMCKWM \
  | 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: dfa10fc4fe34ff8f8716f639f9304ab338d72e2be135744d79c33de36975dbeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42858005401b5603e403e22393a4d575015dba0b4ff32c556c0c4ba6c5195a41",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-10-27T17:52:48Z",
    "title_canon_sha256": "874d784ee6db4b00d6cd85d314174c18f6e4a0400722d93a208b9ef764d3ec55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.7221",
    "kind": "arxiv",
    "version": 1
  }
}