Pith Number

pith:WBDJ6QWM

pith:2010:WBDJ6QWMVW5GK4DPWGSM2BDO5U

not attested not anchored not stored refs pending

Broadband Acoustic Cloak for Ultrasound Waves

Chunguang Xia, Nicholas Fang, Shu Zhang

arxiv:1009.3310 v1 · 2010-09-17 · 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{WBDJ6QWMVW5GK4DPWGSM2BDO5U}

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	2026-05-18T02:05:25.262791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0469f42ccadba65706fb1a4cd046eed34e11294551a550db0247349ed2fb2c2

Aliases

arxiv: 1009.3310 · arxiv_version: 1009.3310v1 · doi: 10.48550/arxiv.1009.3310 · pith_short_12: WBDJ6QWMVW5G · pith_short_16: WBDJ6QWMVW5GK4DP · pith_short_8: WBDJ6QWM

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/WBDJ6QWMVW5GK4DPWGSM2BDO5U \
  | 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: b0469f42ccadba65706fb1a4cd046eed34e11294551a550db0247349ed2fb2c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78d53f7c2aaf61ed06e62805bef0c560c69e7d8f8a196162f351093e70f2fcbc",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2010-09-17T01:37:49Z",
    "title_canon_sha256": "30df961e24e51d8ed0057d12b3cf462e64904e0f5bf85297edbac442c1e13873"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.3310",
    "kind": "arxiv",
    "version": 1
  }
}