Pith Number

pith:Y4PT3DJ2

pith:2017:Y4PT3DJ2UXAXMPG7BN5KLBEE3C

not attested not anchored not stored refs pending

Negative refraction in Weyl semimetals

Ahmad R. T. Nugraha, M. Shoufie Ukhtary, Riichiro Saito

arxiv:1703.07092 v3 · 2017-03-21 · 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{Y4PT3DJ2UXAXMPG7BN5KLBEE3C}

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	2026-05-18T00:35:46.426752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c71f3d8d3aa5c1763cdf0b7aa58484d883cc729099d4692720daa3950b202834

Aliases

arxiv: 1703.07092 · arxiv_version: 1703.07092v3 · doi: 10.48550/arxiv.1703.07092 · pith_short_12: Y4PT3DJ2UXAX · pith_short_16: Y4PT3DJ2UXAXMPG7 · pith_short_8: Y4PT3DJ2

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/Y4PT3DJ2UXAXMPG7BN5KLBEE3C \
  | 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: c71f3d8d3aa5c1763cdf0b7aa58484d883cc729099d4692720daa3950b202834

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0e48ee2033401147a2675c33b332f895af822c3cc311f6b9d4634d3049af27c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2017-03-21T08:34:15Z",
    "title_canon_sha256": "1c712b80cf0889da799f78f943d98cf43e60f2b1190c15d86836797d5f654380"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.07092",
    "kind": "arxiv",
    "version": 3
  }
}