Pith Number

pith:LXBGPEQN

pith:2020:LXBGPEQNNXNEQNM2RI3VKFVUU3

not attested not anchored not stored refs pending

Simple all-optical method for in situ detection of ultralow amounts of ammonia

Dmitry A. Fishman, Eamonn Murphy, Eric O. Potma, Ivana Matanovic, Plamen Atanassov, Tristan Asset, Yechuan Chen, Yuanchao Liu

arxiv:2007.08446 v1 · 2020-07-16 · physics.app-ph · physics.chem-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LXBGPEQNNXNEQNM2RI3VKFVUU3}

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	2026-07-05T01:19:47.291676Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5dc267920d6dda48359a8a375516b4a6cef42451e5888c46aafc54dde2b9f347

Aliases

arxiv: 2007.08446 · arxiv_version: 2007.08446v1 · doi: 10.48550/arxiv.2007.08446 · pith_short_12: LXBGPEQNNXNE · pith_short_16: LXBGPEQNNXNEQNM2 · pith_short_8: LXBGPEQN

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/LXBGPEQNNXNEQNM2RI3VKFVUU3 \
  | 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: 5dc267920d6dda48359a8a375516b4a6cef42451e5888c46aafc54dde2b9f347

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07b2215599603c7814b938845b426d1d7c3328c6c6a0cd21a286069bfe565086",
    "cross_cats_sorted": [
      "physics.chem-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2020-07-16T16:29:28Z",
    "title_canon_sha256": "b4e6c32f981364a2644fcc249f4c643a1309eece8228b18f9639692973fe861f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.08446",
    "kind": "arxiv",
    "version": 1
  }
}