Pith Number

pith:6C7DJWIB

pith:2026:6C7DJWIBG2CCPPODDJ7XC2PLHQ

not attested not anchored not stored refs pending

Active learning for photonic crystals

Charlotte Loh, Marin Solja\v{c}i\'c, Rumen Dangovski, Ryan Lopez

arxiv:2601.16287 v3 · 2026-01-22 · physics.optics · cond-mat.mtrl-sci · cs.LG · 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{6C7DJWIBG2CCPPODDJ7XC2PLHQ}

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	2026-05-20T00:03:02.825370Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0be34d901368427bdc31a7f7169eb3c047b3a6ddc6c2c4e437823c85e26d47e

Aliases

arxiv: 2601.16287 · arxiv_version: 2601.16287v3 · doi: 10.48550/arxiv.2601.16287 · pith_short_12: 6C7DJWIBG2CC · pith_short_16: 6C7DJWIBG2CCPPOD · pith_short_8: 6C7DJWIB

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/6C7DJWIBG2CCPPODDJ7XC2PLHQ \
  | 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: f0be34d901368427bdc31a7f7169eb3c047b3a6ddc6c2c4e437823c85e26d47e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5c4ce75ae28c5f52b46104a8d1accfeccf63e4ff47760058ac76cc32508e43a",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci",
      "cs.LG",
      "physics.app-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2026-01-22T19:42:23Z",
    "title_canon_sha256": "57b861242d9d70b26a67bd82f640a12133bbd85db6179830143dea9f8ed50d03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.16287",
    "kind": "arxiv",
    "version": 3
  }
}