Pith Number

pith:3MBKJF5L

pith:2015:3MBKJF5LM2O6GZL7FJBRSOUU3Q

not attested not anchored not stored refs pending

Newly found sunspot observations by Peter Becker from Rostock for 1708, 1709, and 1710

Elvira Pfitzner (Rostock), Rainer Arlt (AIP Potsdam), Ralph Neuhaeuser (U Jena), Susanne Richter (U Jena)

arxiv:1508.05798 v1 · 2015-08-24 · 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{3MBKJF5LM2O6GZL7FJBRSOUU3Q}

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	2026-05-18T01:31:31.276334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db02a497ab669de3657f2a43193a94dc27a14c5744608a2e64cac5ac884a8019

Aliases

arxiv: 1508.05798 · arxiv_version: 1508.05798v1 · doi: 10.48550/arxiv.1508.05798 · pith_short_12: 3MBKJF5LM2O6 · pith_short_16: 3MBKJF5LM2O6GZL7 · pith_short_8: 3MBKJF5L

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/3MBKJF5LM2O6GZL7FJBRSOUU3Q \
  | 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: db02a497ab669de3657f2a43193a94dc27a14c5744608a2e64cac5ac884a8019

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d4dfc41147d5e74864b3ac6d6ac13b390e202b3c8e76381c58ef343c1e94b99",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-08-24T13:33:32Z",
    "title_canon_sha256": "f75e19fcd61b50ae1faece61104d386faf2776570410a5690b67b81f245d2ae0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.05798",
    "kind": "arxiv",
    "version": 1
  }
}