Pith Number

pith:DFP3DIK5

pith:2018:DFP3DIK5IW32FTNVS2CMNLCELJ

not attested not anchored not stored refs pending

Algol as Horus in the Cairo Calendar: the possible means and the motives of the observations

Jaana Toivari-Viitala, Joonas Lyytinen, Jyri Lehtinen, Lauri Jetsu, Perttu Kajatkari, Sebastian Porceddu, Tapio Markkanen

arxiv:1810.06412 v1 · 2018-10-05 · physics.hist-ph · astro-ph.SR · physics.pop-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{DFP3DIK5IW32FTNVS2CMNLCELJ}

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	2026-05-18T00:03:20.556130Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

195fb1a15d45b7a2cdb59684c6ac445a6f32b3e4a333181296c0c8376cd5d3e9

Aliases

arxiv: 1810.06412 · arxiv_version: 1810.06412v1 · doi: 10.48550/arxiv.1810.06412 · pith_short_12: DFP3DIK5IW32 · pith_short_16: DFP3DIK5IW32FTNV · pith_short_8: DFP3DIK5

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/DFP3DIK5IW32FTNVS2CMNLCELJ \
  | 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: 195fb1a15d45b7a2cdb59684c6ac445a6f32b3e4a333181296c0c8376cd5d3e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eeb806ad798601889911144dc74f1c10f8a04d1a668b2bb08b3ed657bd91a431",
    "cross_cats_sorted": [
      "astro-ph.SR",
      "physics.pop-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2018-10-05T11:02:52Z",
    "title_canon_sha256": "16becaab0fa8b1572a68bb2f5ef9008f6e991f425d8b163d7f21397ace8fbab9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.06412",
    "kind": "arxiv",
    "version": 1
  }
}