Pith Number

pith:7NTDPFMZ

pith:2016:7NTDPFMZ6QKECPUGQOAY7DMWH6

not attested not anchored not stored refs pending

The Impact of the Revised Sunspot Record on Solar Irradiance Reconstructions

C.J. Wu, G. Kopp, J. Lean, N. Krivova

arxiv:1601.05397 v1 · 2016-01-20 · 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{7NTDPFMZ6QKECPUGQOAY7DMWH6}

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	2026-05-18T01:17:17.714615Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb66379599f414413e8683818f8d963f9f9de7e1e469ac3d027c0d3b9677e4de

Aliases

arxiv: 1601.05397 · arxiv_version: 1601.05397v1 · doi: 10.48550/arxiv.1601.05397 · pith_short_12: 7NTDPFMZ6QKE · pith_short_16: 7NTDPFMZ6QKECPUG · pith_short_8: 7NTDPFMZ

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/7NTDPFMZ6QKECPUGQOAY7DMWH6 \
  | 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: fb66379599f414413e8683818f8d963f9f9de7e1e469ac3d027c0d3b9677e4de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce1e8fcb6975ca1eb3c2a8c0fa56466d41c4de20eed753397be9a29c6809e8d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-01-20T20:12:05Z",
    "title_canon_sha256": "aceb145412a97c7d155ed8a21725e81efc6da02ded5de7de60421d450575780c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.05397",
    "kind": "arxiv",
    "version": 1
  }
}