Pith Number

pith:M2ZPTU6L

pith:2013:M2ZPTU6LSGL2FGCOQRCCNRPNKR

not attested not anchored not stored refs pending

Einstein as armchair detective: The case of stimulated radiation

Vasant Natarajan

arxiv:1307.1441 v1 · 2013-07-03 · physics.gen-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{M2ZPTU6LSGL2FGCOQRCCNRPNKR}

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	2026-05-18T03:19:13.670835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66b2f9d3cb9197a2984e844426c5ed544655779640b5fa5b4aab23ec4568a2de

Aliases

arxiv: 1307.1441 · arxiv_version: 1307.1441v1 · doi: 10.48550/arxiv.1307.1441 · pith_short_12: M2ZPTU6LSGL2 · pith_short_16: M2ZPTU6LSGL2FGCO · pith_short_8: M2ZPTU6L

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/M2ZPTU6LSGL2FGCOQRCCNRPNKR \
  | 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: 66b2f9d3cb9197a2984e844426c5ed544655779640b5fa5b4aab23ec4568a2de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69546eaeb3d3e27d36ecce9b0e2fd82fa07bb587ad05de615330949d88834c95",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2013-07-03T11:38:36Z",
    "title_canon_sha256": "03068b9d8514a64f95cf216e7be34de6684e85b90fa0dcf991a589baa5434739"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1441",
    "kind": "arxiv",
    "version": 1
  }
}