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Pith Number

pith:LRGNYUPM

pith:2016:LRGNYUPMEK6QMC2T6OVK65X7IC
not attested not anchored not stored refs pending

Shifting Milestones of Natural Sciences: The Ancient Egyptian Discovery of Algol's Period Confirmed

Lauri Jetsu, Sebastian Porceddu

arxiv:1601.06990 v1 · 2016-01-26 · astro-ph.SR

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{LRGNYUPMEK6QMC2T6OVK65X7IC}

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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 2026-05-18T01:21:59.377271Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

5c4cdc51ec22bd060b53f3aaaf76ff408724c5064322908bc50195e6e1ff7734

Aliases

arxiv: 1601.06990 · arxiv_version: 1601.06990v1 · doi: 10.48550/arxiv.1601.06990 · pith_short_12: LRGNYUPMEK6Q · pith_short_16: LRGNYUPMEK6QMC2T · pith_short_8: LRGNYUPM
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/LRGNYUPMEK6QMC2T6OVK65X7IC \
  | 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: 5c4cdc51ec22bd060b53f3aaaf76ff408724c5064322908bc50195e6e1ff7734
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "b7ff04948965f496dfad9a5a489acd6f0ebc42f23a65b75cfc49b9400a0b5c79",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-01-26T12:12:24Z",
    "title_canon_sha256": "04a013c820dbd074f7864b2a99074180674696f49c6fb7c566830bb0fec79e6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.06990",
    "kind": "arxiv",
    "version": 1
  }
}