Pith Number

pith:THEHPPDJ

pith:2020:THEHPPDJG4YDX3FU2KK53WAITO

not attested not anchored not stored refs pending

Spectral Analysis Modal Methods (SAMMs) using Non-Time-Resolved PIV

Lawrence Ukeiley, Louis N. Cattafesta III, Yang Zhang

arxiv:2007.13955 v1 · 2020-07-28 · physics.flu-dyn

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{THEHPPDJG4YDX3FU2KK53WAITO}

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	2026-07-05T01:47:01.235397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99c877bc6937303becb4d295ddd8089ba2a5ac7887280220ef5ee52730c2936c

Aliases

arxiv: 2007.13955 · arxiv_version: 2007.13955v1 · doi: 10.48550/arxiv.2007.13955 · pith_short_12: THEHPPDJG4YD · pith_short_16: THEHPPDJG4YDX3FU · pith_short_8: THEHPPDJ

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/THEHPPDJG4YDX3FU2KK53WAITO \
  | 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: 99c877bc6937303becb4d295ddd8089ba2a5ac7887280220ef5ee52730c2936c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9994f1c8255570ecb21891e083fbb61901fe075d5d3be2efc000bb01dad61d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2020-07-28T02:35:38Z",
    "title_canon_sha256": "5db23f6b22f7d2f2a2c6326fd6ccdf84fbfe88e7ea82e80ac4d75939e92fffa8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.13955",
    "kind": "arxiv",
    "version": 1
  }
}