Pith Number

pith:TBYRHZ2E

pith:2007:TBYRHZ2EY4LVQ77C4MN4A4LHMT

not attested not anchored not stored refs pending

Not Only Because of Theory: Dyson, Eddington and the Competing Myths of the 1919 Eclipse Expedition

Daniel Kennefick

arxiv:0709.0685 v2 · 2007-09-05 · physics.hist-ph · astro-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TBYRHZ2EY4LVQ77C4MN4A4LHMT}

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	2026-05-18T03:38:14.654403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

987113e744c717587fe2e31bc0716764f7d34104ead12f4ed66924b246be03e7

Aliases

arxiv: 0709.0685 · arxiv_version: 0709.0685v2 · doi: 10.48550/arxiv.0709.0685 · pith_short_12: TBYRHZ2EY4LV · pith_short_16: TBYRHZ2EY4LVQ77C · pith_short_8: TBYRHZ2E

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/TBYRHZ2EY4LVQ77C4MN4A4LHMT \
  | 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: 987113e744c717587fe2e31bc0716764f7d34104ead12f4ed66924b246be03e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa6502798aeff2d5fa90f30fa1f16f316a72c9ccbb0af1ec790c8fc5338d046f",
    "cross_cats_sorted": [
      "astro-ph",
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2007-09-05T16:00:56Z",
    "title_canon_sha256": "9ff1623429b2949d02c069386642714e9adff3e914f8ffe1ccc5fb1b9f055894"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.0685",
    "kind": "arxiv",
    "version": 2
  }
}