Pith Number

pith:MODNHAAS

pith:2013:MODNHAASTGOM4WH5UJ3YMRVLX7

not attested not anchored not stored refs pending

Solar Activity during Two Millennia as Estimated from Annual Tree Rings

K. Masuda, K. Nagaya, S. Kuramata, S. Shibata, T. Mitsutani, Y. Muraki

arxiv:1307.5374 v1 · 2013-07-20 · astro-ph.SR · physics.ao-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{MODNHAASTGOM4WH5UJ3YMRVLX7}

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	2026-05-18T00:56:26.434945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6386d38012999cce58fda2778646abbfd1c2d0c30bd3d09361640cba419a0a89

Aliases

arxiv: 1307.5374 · arxiv_version: 1307.5374v1 · doi: 10.48550/arxiv.1307.5374 · pith_short_12: MODNHAASTGOM · pith_short_16: MODNHAASTGOM4WH5 · pith_short_8: MODNHAAS

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/MODNHAASTGOM4WH5UJ3YMRVLX7 \
  | 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: 6386d38012999cce58fda2778646abbfd1c2d0c30bd3d09361640cba419a0a89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92cbdc4eb75af55f9d5d35a6432024f2a3436858608bfe8f26cdece5c00e6a4d",
    "cross_cats_sorted": [
      "physics.ao-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-07-20T05:56:52Z",
    "title_canon_sha256": "3cc629db1edb261a1027bf12215f78ed380b1d681d8d89e1a42ea30956b6d557"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.5374",
    "kind": "arxiv",
    "version": 1
  }
}