Pith Number

pith:SGVKOSFQ

pith:2012:SGVKOSFQVNT4AV2DZ47NHUMJOH

not attested not anchored not stored refs pending

Causes of an AD 774-775 14C increase

Adrian L. Melott (Univ. Kansas), Brian C. Thomas (Washburn Univ.)

arxiv:1212.0490 v1 · 2012-12-03 · astro-ph.EP · astro-ph.SR · physics.ao-ph · physics.space-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SGVKOSFQVNT4AV2DZ47NHUMJOH}

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	2026-05-18T03:39:17.343118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91aaa748b0ab67c05743cf3ed3d18971f8f6e20aa558dfe3f219077ff5de4282

Aliases

arxiv: 1212.0490 · arxiv_version: 1212.0490v1 · doi: 10.48550/arxiv.1212.0490 · pith_short_12: SGVKOSFQVNT4 · pith_short_16: SGVKOSFQVNT4AV2D · pith_short_8: SGVKOSFQ

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/SGVKOSFQVNT4AV2DZ47NHUMJOH \
  | 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: 91aaa748b0ab67c05743cf3ed3d18971f8f6e20aa558dfe3f219077ff5de4282

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8895d429226a5a4d57ebd59ff6d1caf8fa33df23eda939f770cc8837cb01ee59",
    "cross_cats_sorted": [
      "astro-ph.SR",
      "physics.ao-ph",
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-12-03T18:59:24Z",
    "title_canon_sha256": "34171a644b5985ee57e9b1131b563ee576c3b87cd0f7579380034d05b51e9f02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.0490",
    "kind": "arxiv",
    "version": 1
  }
}