Pith Number

pith:65RUW5VV

pith:2015:65RUW5VVFF46PKWIF3BBWST2RO

not attested not anchored not stored refs pending

Acoustic metamaterial with negative modulus and a double negative structure

Bhisham Sharma, Chin-teh Sun

arxiv:1501.02833 v1 · 2015-01-07 · 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{65RUW5VVFF46PKWIF3BBWST2RO}

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	2026-05-18T02:29:31.118257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7634b76b52979e7aac82ec21b4a7a8b95929bc295a82b6441eaf603076f3b33

Aliases

arxiv: 1501.02833 · arxiv_version: 1501.02833v1 · doi: 10.48550/arxiv.1501.02833 · pith_short_12: 65RUW5VVFF46 · pith_short_16: 65RUW5VVFF46PKWI · pith_short_8: 65RUW5VV

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/65RUW5VVFF46PKWIF3BBWST2RO \
  | 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: f7634b76b52979e7aac82ec21b4a7a8b95929bc295a82b6441eaf603076f3b33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d023ef68db9fc346cac9c9a1e22f2e291fa3d3abe6f3a71b1530a52843568f35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2015-01-07T21:41:11Z",
    "title_canon_sha256": "f459943ddb3f094509cc2ba8fb45bdb411092520f09e19313d8742e3bce0d130"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.02833",
    "kind": "arxiv",
    "version": 1
  }
}