Pith Number

pith:AHPCOW2J

pith:2020:AHPCOW2JKQCKSKLZFTQN4BYXSC

not attested not anchored not stored refs pending

A history of the Magellanic Clouds and the European exploration of the Southern Hemisphere

Michel Dennefeld

arxiv:2009.04973 v5 · 2020-09-10 · physics.hist-ph · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AHPCOW2JKQCKSKLZFTQN4BYXSC}

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	2026-07-05T02:01:14.567382Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01de275b495404a929792ce0de071790bbafe7399f960487c32dad1cb11d47f1

Aliases

arxiv: 2009.04973 · arxiv_version: 2009.04973v5 · doi: 10.48550/arxiv.2009.04973 · pith_short_12: AHPCOW2JKQCK · pith_short_16: AHPCOW2JKQCKSKLZ · pith_short_8: AHPCOW2J

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/AHPCOW2JKQCKSKLZFTQN4BYXSC \
  | 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: 01de275b495404a929792ce0de071790bbafe7399f960487c32dad1cb11d47f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d2492ad79a2ad108a600a503754cd4bdde0e9e70ed3e3b101be1a9f22262f88",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2020-09-10T16:27:34Z",
    "title_canon_sha256": "a4dea448571592e65053bdee813c005638539588a1eaf55c5a39568850c8dc8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.04973",
    "kind": "arxiv",
    "version": 5
  }
}