Pith Number

pith:HJ2RI44A

pith:2021:HJ2RI44AX4WVXBESRK4GVTSWP7

not attested not anchored not stored refs pending

Femtosecond pulses from a mid-infrared quantum cascade laser

Barbara Schneider, Filippos Kapsalidis, J\'er\^ome Faist, Mathieu Bertrand, Matthew Singleton, Mattias Beck, Philipp T\"aschler, Pierre Jouy

arxiv:2105.04870 v2 · 2021-05-11 · 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{HJ2RI44AX4WVXBESRK4GVTSWP7}

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	2026-07-05T03:34:06.362475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a75147380bf2d5b84928ab86ace567fc898d57e05aeceaeb7ba247cb34a923f

Aliases

arxiv: 2105.04870 · arxiv_version: 2105.04870v2 · doi: 10.48550/arxiv.2105.04870 · pith_short_12: HJ2RI44AX4WV · pith_short_16: HJ2RI44AX4WVXBES · pith_short_8: HJ2RI44A

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/HJ2RI44AX4WVXBESRK4GVTSWP7 \
  | 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: 3a75147380bf2d5b84928ab86ace567fc898d57e05aeceaeb7ba247cb34a923f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "548659321080c22664e7ed7e0bdebcc31dad91efe311aff2a812a69bc44f1c1a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-05-11T08:49:15Z",
    "title_canon_sha256": "d4fdeb6d8009e15e896835be05f68a9e0592813851559b95b357689a204176cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.04870",
    "kind": "arxiv",
    "version": 2
  }
}