Pith Number

pith:T32PUG5T

pith:2007:T32PUG5TU3N5EBJU25COCRYN2B

not attested not anchored not stored refs pending

Nova Geminorum 1912 and the Origin of the Idea of Gravitational Lensing

Tilman Sauer

arxiv:0704.0963 v1 · 2007-04-07 · physics.hist-ph · astro-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{T32PUG5TU3N5EBJU25COCRYN2B}

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	2026-05-18T03:04:47.030336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ef4fa1bb3a6dbd20534d744e1470dd06ab977b99964252188f525889f8a791a

Aliases

arxiv: 0704.0963 · arxiv_version: 0704.0963v1 · doi: 10.48550/arxiv.0704.0963 · pith_short_12: T32PUG5TU3N5 · pith_short_16: T32PUG5TU3N5EBJU · pith_short_8: T32PUG5T

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/T32PUG5TU3N5EBJU25COCRYN2B \
  | 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: 9ef4fa1bb3a6dbd20534d744e1470dd06ab977b99964252188f525889f8a791a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7d97ea6d95ec74193bc790d9a248f39884a6edd3c9277579b63d18b0ec74363",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2007-04-07T02:07:44Z",
    "title_canon_sha256": "1c3766dfad565521ec7cb59390afd60f95bac874fd52b082db2d025310bb2472"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.0963",
    "kind": "arxiv",
    "version": 1
  }
}