Pith Number

pith:57BE3C3U

pith:2009:57BE3C3UJEX6BE5Y4IWKCZLSTE

not attested not anchored not stored refs pending

6 W, 1 kHz linewidth, tunable continuous-wave near-infrared laser

Holger Mueller, Sheng-wey Chiow, Steven Chu, Sven Herrmann

arxiv:0901.2582 v2 · 2009-01-16 · 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{57BE3C3UJEX6BE5Y4IWKCZLSTE}

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	2026-05-18T02:14:57.076473Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efc24d8b74492fe093b8e22ca16572993609e148bbaf2bcdcd0dea0cd4f5ff4d

Aliases

arxiv: 0901.2582 · arxiv_version: 0901.2582v2 · doi: 10.48550/arxiv.0901.2582 · pith_short_12: 57BE3C3UJEX6 · pith_short_16: 57BE3C3UJEX6BE5Y · pith_short_8: 57BE3C3U

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/57BE3C3UJEX6BE5Y4IWKCZLSTE \
  | 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: efc24d8b74492fe093b8e22ca16572993609e148bbaf2bcdcd0dea0cd4f5ff4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87b32ff8925ac4d8c64e740c44409e00eea3ab8813868386e7650c66a81efba0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2009-01-16T21:42:15Z",
    "title_canon_sha256": "1f6a08a8cb79302f30c8259bf30660660ebbc6388ec47d49a366492864595afa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2582",
    "kind": "arxiv",
    "version": 2
  }
}