Pith Number

pith:WM7KFUHC

pith:2012:WM7KFUHCCV54NSEJOKJCCWIEZF

not attested not anchored not stored refs pending

Did the ancient egyptians record the period of the eclipsing binary Algol - the Raging one?

J. Lehtinen, J. Lyytinen, J. Toivari-Viitala, L. Jetsu, P. Kajatkari, S. Porceddu, T. Markkanen

arxiv:1204.6206 v2 · 2012-04-27 · 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{WM7KFUHCCV54NSEJOKJCCWIEZF}

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	2026-05-18T01:57:43.240938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b33ea2d0e2157bc6c8897292215904c9741b4ebd7597c6de62862dc8b989f2e6

Aliases

arxiv: 1204.6206 · arxiv_version: 1204.6206v2 · doi: 10.48550/arxiv.1204.6206 · pith_short_12: WM7KFUHCCV54 · pith_short_16: WM7KFUHCCV54NSEJ · pith_short_8: WM7KFUHC

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/WM7KFUHCCV54NSEJOKJCCWIEZF \
  | 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: b33ea2d0e2157bc6c8897292215904c9741b4ebd7597c6de62862dc8b989f2e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "943317a605fb44e98bd5dd7e998be7e3c1183257e88d905f523ef942097cd070",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-04-27T13:27:12Z",
    "title_canon_sha256": "e408d72365573e983e67f2e942d66e9870d0ab6fafbe3da93d6d6136a585d08e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.6206",
    "kind": "arxiv",
    "version": 2
  }
}