Pith Number

pith:TFRQEOAG

pith:2011:TFRQEOAGRNUUZ34O3IXH3FXY2K

not attested not anchored not stored refs pending

Time-reversed optical parametric oscillation

Stefano Longhi

arxiv:1111.3470 v1 · 2011-11-15 · 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{TFRQEOAGRNUUZ34O3IXH3FXY2K}

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	2026-05-18T00:56:53.984701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99630238068b694cef8eda2e7d96f8d2b88460dc644b1c68a990120c98a372e5

Aliases

arxiv: 1111.3470 · arxiv_version: 1111.3470v1 · doi: 10.48550/arxiv.1111.3470 · pith_short_12: TFRQEOAGRNUU · pith_short_16: TFRQEOAGRNUUZ34O · pith_short_8: TFRQEOAG

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/TFRQEOAGRNUUZ34O3IXH3FXY2K \
  | 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: 99630238068b694cef8eda2e7d96f8d2b88460dc644b1c68a990120c98a372e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e27c0894ba6663c02db5efd21234cfc293d0a2f285a7f11507ae826689884f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2011-11-15T09:40:05Z",
    "title_canon_sha256": "a0d4083f8637a41d13c59333140c159dc44a4011a71669937685d1f2eada1238"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3470",
    "kind": "arxiv",
    "version": 1
  }
}