Pith Number

pith:SDSQ74XC

pith:2021:SDSQ74XCB5W34N5NDQWHEOKLCA

not attested not anchored not stored refs pending

Underwater metamaterial absorber with impedance-matched composite

Alain Tinel, Bruno Morvan, Jean-Philippe Groby, Nan Gao, Ping Sheng, Sichao Qu, Vicente Romero-Garc\'ia

arxiv:2111.02075 v1 · 2021-11-03 · 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{SDSQ74XCB5W34N5NDQWHEOKLCA}

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	2026-07-05T04:25:13.444008Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90e50ff2e20f6dbe37ad1c2c72394b102008f71e168faebe2ed244e445042f24

Aliases

arxiv: 2111.02075 · arxiv_version: 2111.02075v1 · doi: 10.48550/arxiv.2111.02075 · pith_short_12: SDSQ74XCB5W3 · pith_short_16: SDSQ74XCB5W34N5N · pith_short_8: SDSQ74XC

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/SDSQ74XCB5W34N5NDQWHEOKLCA \
  | 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: 90e50ff2e20f6dbe37ad1c2c72394b102008f71e168faebe2ed244e445042f24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9c2b98cd22a212de24fa38ebef8f32441f05c0771bb33fafd99eb16500e8705",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2021-11-03T08:46:15Z",
    "title_canon_sha256": "1d0f7716a0689954625e40814c25339b59a8b715166a2c0f4a04334100532763"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.02075",
    "kind": "arxiv",
    "version": 1
  }
}