Pith Number

pith:JFKXU2NN

pith:2019:JFKXU2NNZWJL67TDWWH6UG7HS6

not attested not anchored not stored refs pending

What's in a frequency: new tools for graph Fourier Transform visualization

Antonio Ortega, Benjamin Girault

arxiv:1903.08827 v1 · 2019-03-21 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JFKXU2NNZWJL67TDWWH6UG7HS6}

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	2026-05-17T23:50:43.812583Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

49557a69adcd92bf7e63b58fea1be797bb89d704ff77c17c1f308f5033756f37

Aliases

arxiv: 1903.08827 · arxiv_version: 1903.08827v1 · doi: 10.48550/arxiv.1903.08827 · pith_short_12: JFKXU2NNZWJL · pith_short_16: JFKXU2NNZWJL67TD · pith_short_8: JFKXU2NN

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/JFKXU2NNZWJL67TDWWH6UG7HS6 \
  | 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: 49557a69adcd92bf7e63b58fea1be797bb89d704ff77c17c1f308f5033756f37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86206fcdb1a2fff814eb773487940d23dc93bc70c3cf61a0c6aaa217e0693031",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2019-03-21T04:37:55Z",
    "title_canon_sha256": "243f021eeee8618da18e4a7aab8fac67a931c9fc9a570b49f0a2720c8f67fe73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.08827",
    "kind": "arxiv",
    "version": 1
  }
}