Pith Number

pith:52J3EF5E

pith:2019:52J3EF5E4ZR5MKSEX2LKAFZXYU

not attested not anchored not stored refs pending

Refractometry of birefringent materials at Brewster angle

A.K. Lyamets, E.A.Tikhonov

arxiv:1908.09620 v1 · 2019-08-06 · physics.gen-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{52J3EF5E4ZR5MKSEX2LKAFZXYU}

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	2026-07-04T23:59:42.032212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee93b217a4e663d62a44be96a01737c524229143c77e8322d02219b5ddae1865

Aliases

arxiv: 1908.09620 · arxiv_version: 1908.09620v1 · doi: 10.48550/arxiv.1908.09620 · pith_short_12: 52J3EF5E4ZR5 · pith_short_16: 52J3EF5E4ZR5MKSE · pith_short_8: 52J3EF5E

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/52J3EF5E4ZR5MKSEX2LKAFZXYU \
  | 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: ee93b217a4e663d62a44be96a01737c524229143c77e8322d02219b5ddae1865

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3da7d216a793f62d29d8fc40d51c74718374b664aa6613aa98ddce397491b6ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2019-08-06T22:53:28Z",
    "title_canon_sha256": "ed5ca7c04d7164f820cb1caeb2a099c0c50c73c41be1c4e4ddfac9e955b79d54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.09620",
    "kind": "arxiv",
    "version": 1
  }
}