Pith Number

pith:WDF7YA5T

pith:2019:WDF7YA5TMXUMNO5MCXLDYDJU5N

not attested not anchored not stored refs pending

A novel zero-frequency seismic metamaterial

Pai Peng, Qiu-Jiao Du, Yi Zeng, Yue-Sheng Wang

arxiv:1907.06446 v1 · 2019-07-15 · physics.app-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{WDF7YA5TMXUMNO5MCXLDYDJU5N}

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	2026-05-17T23:40:37.636215Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0cbfc03b365e8c6bbac15d63c0d34eb6d5b94336bfa58df28601cfc563448cf

Aliases

arxiv: 1907.06446 · arxiv_version: 1907.06446v1 · doi: 10.48550/arxiv.1907.06446 · pith_short_12: WDF7YA5TMXUM · pith_short_16: WDF7YA5TMXUMNO5M · pith_short_8: WDF7YA5T

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/WDF7YA5TMXUMNO5MCXLDYDJU5N \
  | 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: b0cbfc03b365e8c6bbac15d63c0d34eb6d5b94336bfa58df28601cfc563448cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a76b85ee43d8b0354f9d45af24927a2043054764f8e24719f193911bdee575ef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2019-07-15T11:42:49Z",
    "title_canon_sha256": "97179a7e42168c7d6734dfbe5e69df70a224499a7ed5c9164296252a1a520b50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.06446",
    "kind": "arxiv",
    "version": 1
  }
}