Pith Number

pith:WUXQBWBE

pith:2016:WUXQBWBE6BDFIWTGNQGZHMDEE3

not attested not anchored not stored refs pending

Sunspot Observations and Counting at Specola Solare Ticinese in Locarno since 1957

Andrea Manna, Marco Cagnotti, Michele Bianda, Renzo Ramelli, Sergio Cortesi

arxiv:1602.07998 v1 · 2016-02-25 · 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{WUXQBWBE6BDFIWTGNQGZHMDEE3}

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	2026-05-18T01:19:58.074704Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b52f00d824f046545a666c0d93b06426e863ae8ae5e0db855996e398948418cd

Aliases

arxiv: 1602.07998 · arxiv_version: 1602.07998v1 · doi: 10.48550/arxiv.1602.07998 · pith_short_12: WUXQBWBE6BDF · pith_short_16: WUXQBWBE6BDFIWTG · pith_short_8: WUXQBWBE

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/WUXQBWBE6BDFIWTGNQGZHMDEE3 \
  | 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: b52f00d824f046545a666c0d93b06426e863ae8ae5e0db855996e398948418cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1916ae5fd64b23bcc9bb25c0d59c4846edc40441ed06cc9f1e9d70e8f02576cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-02-25T17:18:19Z",
    "title_canon_sha256": "ff3809748d92ad5e7eeb828daca265d7a37c96d0e2c90ab75c2a05ddcc5df5af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.07998",
    "kind": "arxiv",
    "version": 1
  }
}