Pith Number

pith:4CNDA3RL

pith:2020:4CNDA3RL22L33WYSHHXPCPQFOM

not attested not anchored not stored refs pending

Two-octave-wide (3-12 {\mu}m) mid-infrared frequency comb produced as an optical subharmonic in a nondispersive cavity

K. L. Vodopyanov, P. G. Schunemann, Q. Ru, S. B. Mirov, S. Vasilyev, T. Kawamori

arxiv:2007.02496 v1 · 2020-07-06 · 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{4CNDA3RL22L33WYSHHXPCPQFOM}

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	2026-07-05T01:16:22.568863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e09a306e2bd697bddb1239eef13e0573198538c4c2fba518af7bcf43ee774f9c

Aliases

arxiv: 2007.02496 · arxiv_version: 2007.02496v1 · doi: 10.48550/arxiv.2007.02496 · pith_short_12: 4CNDA3RL22L3 · pith_short_16: 4CNDA3RL22L33WYS · pith_short_8: 4CNDA3RL

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/4CNDA3RL22L33WYSHHXPCPQFOM \
  | 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: e09a306e2bd697bddb1239eef13e0573198538c4c2fba518af7bcf43ee774f9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0329aa030831ef2dc4b923db54685709e79e602f123745bd317765fe65922833",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2020-07-06T01:57:58Z",
    "title_canon_sha256": "871bfbbb6b8bc3a0bbf505f0e07f2e52aa359d4a6d4ab8fbee7e6d9b5be13618"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.02496",
    "kind": "arxiv",
    "version": 1
  }
}