Pith Number

pith:3Z325WLI

pith:2021:3Z325WLIWQB6TAOXJHPW3NXTCJ

not attested not anchored not stored refs pending

A quantum cascade laser-pumped molecular laser tunable over 1 THz

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

arxiv:2105.13326 v2 · 2021-05-27 · 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{3Z325WLIWQB6TAOXJHPW3NXTCJ}

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	2026-07-05T03:54:41.395255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de77aed968b403e981d749df6db6f3126d6dfa278b246d9e05dba67726a55f8d

Aliases

arxiv: 2105.13326 · arxiv_version: 2105.13326v2 · doi: 10.48550/arxiv.2105.13326 · pith_short_12: 3Z325WLIWQB6 · pith_short_16: 3Z325WLIWQB6TAOX · pith_short_8: 3Z325WLI

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/3Z325WLIWQB6TAOXJHPW3NXTCJ \
  | 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: de77aed968b403e981d749df6db6f3126d6dfa278b246d9e05dba67726a55f8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cd1b6372aacc43e5ed57b3de18ecbadec50cad17ade90613747389657fc2647",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-05-27T17:33:49Z",
    "title_canon_sha256": "59b7e363fcaf603848dc1ffc78889fc86121d25066fc8161755e6ac2b627a5de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.13326",
    "kind": "arxiv",
    "version": 2
  }
}