Pith Number

pith:QSNNNF7S

pith:2012:QSNNNF7STDASXP2JYLQBGM67SX

not attested not anchored not stored refs pending

Design of an optical reference cavity with low thermal noise and flexible thermal expansion properties

B. Ouyang, J. Luo, J. Zhang, K. Deng, Y. X. Luo, Z. H. Lu

arxiv:1204.1209 v1 · 2012-04-05 · 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{QSNNNF7STDASXP2JYLQBGM67SX}

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	2026-05-18T01:57:56.694805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

849ad697f298c12bbf49c2e01333df95e7a28639ad492b97853379b4cce77929

Aliases

arxiv: 1204.1209 · arxiv_version: 1204.1209v1 · doi: 10.48550/arxiv.1204.1209 · pith_short_12: QSNNNF7STDAS · pith_short_16: QSNNNF7STDASXP2J · pith_short_8: QSNNNF7S

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/QSNNNF7STDASXP2JYLQBGM67SX \
  | 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: 849ad697f298c12bbf49c2e01333df95e7a28639ad492b97853379b4cce77929

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7751964e39daa3cb51d774988550a3ea606b78271b5dd73e80653a11fb86f464",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-04-05T12:54:51Z",
    "title_canon_sha256": "3eeefdf20264ac12f552be67a2f53affa1798b1c062e35fc8247a82fcc8d09a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1209",
    "kind": "arxiv",
    "version": 1
  }
}