Pith Number

pith:4OQOYHV3

pith:2019:4OQOYHV36H576H2IVJR4CDFKCK

not attested not anchored not stored refs pending

Trirefringence in nonlinear magnetoeletric metamaterials revisited

A. L. Ferreira Junior, J. P. Pereira, V. A. De Lorenci

arxiv:1901.07087 v1 · 2019-01-21 · 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{4OQOYHV36H576H2IVJR4CDFKCK}

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	2026-05-17T23:44:12.278227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3a0ec1ebbf1fbff1f48aa63c10caa12be7346a4e6d8af7a866f16637d68809b

Aliases

arxiv: 1901.07087 · arxiv_version: 1901.07087v1 · doi: 10.48550/arxiv.1901.07087 · pith_short_12: 4OQOYHV36H57 · pith_short_16: 4OQOYHV36H576H2I · pith_short_8: 4OQOYHV3

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/4OQOYHV36H576H2IVJR4CDFKCK \
  | 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: e3a0ec1ebbf1fbff1f48aa63c10caa12be7346a4e6d8af7a866f16637d68809b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc25b20aa5424e75d888d7f38d82f8c338c0a642585d70ad46fbe7b1f6ff4374",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-01-21T21:18:59Z",
    "title_canon_sha256": "cbbe7cc1b6a92e52cc4a8f6a3d02b557a7980aa6e00efc9c7f8cb2bdf900f052"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.07087",
    "kind": "arxiv",
    "version": 1
  }
}