Pith Number

pith:QXBEEJPM

pith:2020:QXBEEJPMXUGONI6USIYBQ36IIS

not attested not anchored not stored refs pending

European Longitude Prizes. I. Longitude Determination in the Spanish Empire

Australia), Richard de Grijs (Macquarie University, Sydney

arxiv:2009.12778 v1 · 2020-09-27 · 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{QXBEEJPMXUGONI6USIYBQ36IIS}

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	2026-07-05T01:38:23.160494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85c24225ecbd0ce6a3d49230186fc844ad4877ae381329b7cfce24e828cf925f

Aliases

arxiv: 2009.12778 · arxiv_version: 2009.12778v1 · doi: 10.48550/arxiv.2009.12778 · pith_short_12: QXBEEJPMXUGO · pith_short_16: QXBEEJPMXUGONI6U · pith_short_8: QXBEEJPM

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/QXBEEJPMXUGONI6USIYBQ36IIS \
  | 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: 85c24225ecbd0ce6a3d49230186fc844ad4877ae381329b7cfce24e828cf925f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a780f0320e4b7013c446e20037c94a4f42297e1e68e0ed001ebbab6507f8cff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2020-09-27T07:48:23Z",
    "title_canon_sha256": "cca5b8b5ba7d3cfd01c904a86d844b79eecc511070b66504b3e6220729cc412b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.12778",
    "kind": "arxiv",
    "version": 1
  }
}