Pith Number

pith:YTLTSB7O

pith:2016:YTLTSB7O7APH5Q5M5TXFA2TPUL

not attested not anchored not stored refs pending

Optimal Sound Absorbing Structures

Caixing Fu, Min Yang, Ping Sheng, Shuyu Chen

arxiv:1609.09561 v1 · 2016-09-30 · 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{YTLTSB7O7APH5Q5M5TXFA2TPUL}

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	2026-07-05T11:16:46.419358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4d73907eef81e7ec3acecee506a6fa2e267b594efd94c5d30804d002cbe6103

Aliases

arxiv: 1609.09561 · arxiv_version: 1609.09561v1 · doi: 10.48550/arxiv.1609.09561 · pith_short_12: YTLTSB7O7APH · pith_short_16: YTLTSB7O7APH5Q5M · pith_short_8: YTLTSB7O

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/YTLTSB7O7APH5Q5M5TXFA2TPUL \
  | 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: c4d73907eef81e7ec3acecee506a6fa2e267b594efd94c5d30804d002cbe6103

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b18d58a2e50768a7f1d5d657848e4c78516c618db9046344e46a1e53365127e8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2016-09-30T01:18:19Z",
    "title_canon_sha256": "b9036a7cd56acbc9015b359f9590fe3d1102a5722086a6e7c574d0422a65ff87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.09561",
    "kind": "arxiv",
    "version": 1
  }
}