Pith Number

pith:MMBQBPM4

pith:2013:MMBQBPM4QKXVERLBUMBMX6SR52

not attested not anchored not stored refs pending

Advanced sine wave modulation of continuous wave laser system for atmospheric CO2 differential absorption measurements

Amin R. Nehrir, Bing Lin, Joel F. Campbell

arxiv:1309.3542 v2 · 2013-09-13 · physics.ao-ph · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MMBQBPM4QKXVERLBUMBMX6SR52}

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	2026-05-18T02:58:56.854887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

630300bd9c82af524561a302cbfa51ee8f206ed1b4d0520975619760fa45a81e

Aliases

arxiv: 1309.3542 · arxiv_version: 1309.3542v2 · doi: 10.48550/arxiv.1309.3542 · pith_short_12: MMBQBPM4QKXV · pith_short_16: MMBQBPM4QKXVERLB · pith_short_8: MMBQBPM4

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/MMBQBPM4QKXVERLBUMBMX6SR52 \
  | 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: 630300bd9c82af524561a302cbfa51ee8f206ed1b4d0520975619760fa45a81e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c218d2ef107d82b4ef91bf67102f3e38daa8c840d8cb59c5c5624928a4ff999",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2013-09-13T19:15:16Z",
    "title_canon_sha256": "3738e606d1336743edce16cc916b1be6be219b3d4e28d2b3af51797d7c90cacb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.3542",
    "kind": "arxiv",
    "version": 2
  }
}