Pith Number

pith:XDKXRG42

pith:2012:XDKXRG425I7TQOZCUXBBVHZVSC

not attested not anchored not stored refs pending

A New Bound on Excess Frequency Noise in Second Harmonic Generation in PPKTP at the 10^-19 Level

David Yeaton-Massey, Rana X. Adhikari

arxiv:1208.2011 v2 · 2012-08-09 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XDKXRG425I7TQOZCUXBBVHZVSC}

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	2026-05-18T03:19:35.263755Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8d5789b9aea3f383b22a5c21a9f3590b8013f3becb59eb7265685b75402d5dd

Aliases

arxiv: 1208.2011 · arxiv_version: 1208.2011v2 · doi: 10.48550/arxiv.1208.2011 · pith_short_12: XDKXRG425I7T · pith_short_16: XDKXRG425I7TQOZC · pith_short_8: XDKXRG42

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/XDKXRG425I7TQOZCUXBBVHZVSC \
  | 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: b8d5789b9aea3f383b22a5c21a9f3590b8013f3becb59eb7265685b75402d5dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79b548fedac86a2ef8baa751bfd9b8fff0cd298296cf4ed85d66ef907898337e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-08-09T19:21:07Z",
    "title_canon_sha256": "d509719fffeac4cde8174a076df45a324d87ce476a612205aceceda5f8d60471"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.2011",
    "kind": "arxiv",
    "version": 2
  }
}