Pith Number

pith:ERMNURUP

pith:2018:ERMNURUPFRWGEWRJBJNZPXJIA4

not attested not anchored not stored refs pending

Inverse Doppler Effects in Pipe Instruments

Fangliang Shen, Jing Zhao, Linlin Li, Shilong Zhai, Xiaopeng Zhao

arxiv:1802.08382 v1 · 2018-02-23 · 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{ERMNURUPFRWGEWRJBJNZPXJIA4}

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	2026-05-18T00:22:43.860004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2458da468f2c6c625a290a5b97dd28070c7e5a82227c96e274e5c442e298f36e

Aliases

arxiv: 1802.08382 · arxiv_version: 1802.08382v1 · doi: 10.48550/arxiv.1802.08382 · pith_short_12: ERMNURUPFRWG · pith_short_16: ERMNURUPFRWGEWRJ · pith_short_8: ERMNURUP

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/ERMNURUPFRWGEWRJBJNZPXJIA4 \
  | 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: 2458da468f2c6c625a290a5b97dd28070c7e5a82227c96e274e5c442e298f36e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0937a7a94a38833448e938b1e10826be202f80473ea144c9790179ca0d25c10",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2018-02-23T04:32:27Z",
    "title_canon_sha256": "4ad4a9131bd39fb5f9bd7c5ca4886e1a5b8071f30218362ec194ac01e6c52fb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.08382",
    "kind": "arxiv",
    "version": 1
  }
}