Pith Number

pith:QDLUAIGR

pith:2015:QDLUAIGRX7CYA7NBJBV6FFMTMH

not attested not anchored not stored refs pending

On the dual-cone nature of the conical refraction phenomenon

Alex Turpin, Hiromitsu Tomizawa, Jordi Mompart, Todor K. Kalkandjiev, Yury V. Loiko

arxiv:1505.04933 v1 · 2015-05-19 · 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{QDLUAIGRX7CYA7NBJBV6FFMTMH}

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	2026-05-18T02:05:22.738140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80d74020d1bfc5807da1486be2959361d7d79a5e32f3dac57096b4b6b9d89e6c

Aliases

arxiv: 1505.04933 · arxiv_version: 1505.04933v1 · doi: 10.48550/arxiv.1505.04933 · pith_short_12: QDLUAIGRX7CY · pith_short_16: QDLUAIGRX7CYA7NB · pith_short_8: QDLUAIGR

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/QDLUAIGRX7CYA7NBJBV6FFMTMH \
  | 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: 80d74020d1bfc5807da1486be2959361d7d79a5e32f3dac57096b4b6b9d89e6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0592ad71e1ad32d174f1ef1fe41de8223f3bbaab6ac6782370ede894d2e0739",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2015-05-19T09:54:40Z",
    "title_canon_sha256": "87811d33082247cac3fcc92b3014aab42a7155be0f9813918664643a61e89239"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.04933",
    "kind": "arxiv",
    "version": 1
  }
}