Pith Number

pith:IZQWB4WS

pith:2012:IZQWB4WS5PSKZLD75JAXRXNBCE

not attested not anchored not stored refs pending

Design Omnidirectional Wave Absorbers by Transformation Method

Gengkai Hu, Zheng Chang

arxiv:1205.5448 v1 · 2012-05-22 · physics.class-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{IZQWB4WS5PSKZLD75JAXRXNBCE}

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	2026-05-18T03:55:01.032629Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

466160f2d2ebe4acac7fea4178dda111296a848a205026a3787db3d48ec3c55e

Aliases

arxiv: 1205.5448 · arxiv_version: 1205.5448v1 · doi: 10.48550/arxiv.1205.5448 · pith_short_12: IZQWB4WS5PSK · pith_short_16: IZQWB4WS5PSKZLD7 · pith_short_8: IZQWB4WS

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/IZQWB4WS5PSKZLD75JAXRXNBCE \
  | 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: 466160f2d2ebe4acac7fea4178dda111296a848a205026a3787db3d48ec3c55e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af613947195749b58aeeeebb5b9ae56a0ea95dcc88bb5433d7ab5b628e21fb0c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2012-05-22T06:37:57Z",
    "title_canon_sha256": "39e40426156903134b6c910d0da1b2e08b8f692acbf855f2940cc897767d490e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.5448",
    "kind": "arxiv",
    "version": 1
  }
}