Pith Number

pith:QFXH6D4D

pith:2016:QFXH6D4DLZJW6L27MAJUKXQJQ3

not attested not anchored not stored refs pending

Towards 'smart lasers': self-optimisation of an ultrafast pulse source using a genetic algorithm

E. J. R. Kelleher, R. I. Woodward

arxiv:1607.05688 v1 · 2016-07-19 · 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{QFXH6D4DLZJW6L27MAJUKXQJQ3}

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	2026-05-18T00:42:23.878055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

816e7f0f835e536f2f5f6013455e0986ec5795112da753c4c3944c6693e81020

Aliases

arxiv: 1607.05688 · arxiv_version: 1607.05688v1 · doi: 10.48550/arxiv.1607.05688 · pith_short_12: QFXH6D4DLZJW · pith_short_16: QFXH6D4DLZJW6L27 · pith_short_8: QFXH6D4D

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/QFXH6D4DLZJW6L27MAJUKXQJQ3 \
  | 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: 816e7f0f835e536f2f5f6013455e0986ec5795112da753c4c3944c6693e81020

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23254d22858ec59296861095f5f2f8a6b0a8c5182ccb7e44e17fff67873e21dd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2016-07-19T18:26:49Z",
    "title_canon_sha256": "c7175035811c4d6cdae4e319642c5c338d69b2cab4554370dc81768ab2e1dec6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.05688",
    "kind": "arxiv",
    "version": 1
  }
}