Pith Number

pith:J4OLDSQI

pith:2020:J4OLDSQIZS7RMDYTDEZP62I3FY

not attested not anchored not stored refs pending

Coherent multi-mode dynamics in a Quantum Cascade Laser: Amplitude and Frequency-modulated Optical Frequency Combs

Carlo Silvestri, Lorenzo Luigi Columbo, Mariangela Gioannini, Massimo Brambilla

arxiv:2004.13808 v1 · 2020-04-28 · 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{J4OLDSQIZS7RMDYTDEZP62I3FY}

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	2026-07-05T01:30:30.520565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f1cb1ca08ccbf160f131932ff691b2e09b92fddf65d12d857a77f0d19028009

Aliases

arxiv: 2004.13808 · arxiv_version: 2004.13808v1 · doi: 10.48550/arxiv.2004.13808 · pith_short_12: J4OLDSQIZS7R · pith_short_16: J4OLDSQIZS7RMDYT · pith_short_8: J4OLDSQI

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/J4OLDSQIZS7RMDYTDEZP62I3FY \
  | 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: 4f1cb1ca08ccbf160f131932ff691b2e09b92fddf65d12d857a77f0d19028009

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "991ea810128933e9914d6ad4781e43786e21aba668ea39d01c456fbfe5ae0483",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2020-04-28T20:31:20Z",
    "title_canon_sha256": "b79f3e14044acc73174430abc3ba97e85fe12a8346d88cab6cdc2d107170ddcc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.13808",
    "kind": "arxiv",
    "version": 1
  }
}