Pith Number

pith:UGJ5NNAV

pith:2016:UGJ5NNAVPTEJYMGEXVFYOPNVIC

not attested not anchored not stored refs pending

Heritage of Konkoly's Solar Observations: the Debrecen Photoheliograph Programme and the Debrecen Sunspot Databases

A. Ludm\'any, L. Gy\H{o}ri, T. Baranyi

arxiv:1608.08419 v3 · 2016-08-30 · 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{UGJ5NNAVPTEJYMGEXVFYOPNVIC}

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	2026-05-18T00:54:10.559698Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a193d6b4157cc89c30c4bd4b873db540b923d80c5649600da9b978021c49fa70

Aliases

arxiv: 1608.08419 · arxiv_version: 1608.08419v3 · doi: 10.48550/arxiv.1608.08419 · pith_short_12: UGJ5NNAVPTEJ · pith_short_16: UGJ5NNAVPTEJYMGE · pith_short_8: UGJ5NNAV

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/UGJ5NNAVPTEJYMGEXVFYOPNVIC \
  | 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: a193d6b4157cc89c30c4bd4b873db540b923d80c5649600da9b978021c49fa70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab44a67f8149e296593adeb515efcaea69a1f658c0ad3348155fdc6d334d9afc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-08-30T12:28:31Z",
    "title_canon_sha256": "26e0cb32d34f7ffa6da362a1b3a1c7aff5e41222e7e31fbf9b1cab71e6591834"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.08419",
    "kind": "arxiv",
    "version": 3
  }
}