Pith Number

pith:DQ5D2VCU

pith:2021:DQ5D2VCU7CH44ULQG3YFIILKB3

not attested not anchored not stored refs pending

Multi-line lasing in the broadly tunable ammonia quantum cascade laser pumped molecular laser

Arman Amirzhan, Federico Capasso, Henry O. Everitt, H. Ted Stinson, Jeremy Rowlette, Michael Pushkarsky, Paul Chevalier, Timothy Day

arxiv:2111.09501 v2 · 2021-11-18 · physics.optics · physics.app-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{DQ5D2VCU7CH44ULQG3YFIILKB3}

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	2026-07-05T04:03:56.664772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c3a3d5454f88fce517036f054216a0ee5e988d971fef64a833570c8413bb22a

Aliases

arxiv: 2111.09501 · arxiv_version: 2111.09501v2 · doi: 10.48550/arxiv.2111.09501 · pith_short_12: DQ5D2VCU7CH4 · pith_short_16: DQ5D2VCU7CH44ULQ · pith_short_8: DQ5D2VCU

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/DQ5D2VCU7CH44ULQG3YFIILKB3 \
  | 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: 1c3a3d5454f88fce517036f054216a0ee5e988d971fef64a833570c8413bb22a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41ee40c264da95e9d654dd5b67de616abb73beb8fd3488803be3faf1f8c65f60",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-11-18T03:42:15Z",
    "title_canon_sha256": "d763c8584762207355323b274d1af344d8701c463906be2d055050a8cb6d343e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.09501",
    "kind": "arxiv",
    "version": 2
  }
}