Pith Number

pith:QQFIEBEG

pith:2017:QQFIEBEGDS6ST4AAMXYJGVRPT2

not attested not anchored not stored refs pending

The sunspot observations by Toaldo and Comparetti at November 1779

F. Dom\'inguez-Castro, J. M. Vaquero

arxiv:1707.03393 v1 · 2017-07-10 · astro-ph.SR · physics.hist-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{QQFIEBEGDS6ST4AAMXYJGVRPT2}

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	2026-05-18T00:40:28.138842Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

840a8204861cbd29f00065f093562f9eb984dcf83c2b821e5fc2b612c1ef03a1

Aliases

arxiv: 1707.03393 · arxiv_version: 1707.03393v1 · doi: 10.48550/arxiv.1707.03393 · pith_short_12: QQFIEBEGDS6S · pith_short_16: QQFIEBEGDS6ST4AA · pith_short_8: QQFIEBEG

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/QQFIEBEGDS6ST4AAMXYJGVRPT2 \
  | 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: 840a8204861cbd29f00065f093562f9eb984dcf83c2b821e5fc2b612c1ef03a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cee9e4f07f65046a40d9a2b418e02b6d207e7c9998fd8fc15918cd33f52a5649",
    "cross_cats_sorted": [
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-07-10T22:29:23Z",
    "title_canon_sha256": "4a73625bcd61c808d0dbddbad803d840b20b4f7225054c6d18b932e2f5aaad01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.03393",
    "kind": "arxiv",
    "version": 1
  }
}