Pith Number

pith:4LGJQWBV

pith:2021:4LGJQWBVQOIUU7BDK52C5BNO7C

not attested not anchored not stored refs pending

Image Processing via Multilayer Graph Spectra

Qinwen Deng, Songyang Zhang, Zhi Ding

arxiv:2108.13639 v3 · 2021-08-31 · 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{4LGJQWBVQOIUU7BDK52C5BNO7C}

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	2026-07-05T04:15:27.867622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2cc98583583914a7c2357742e85aef8985d23e7924e5262e1ea1a8465771e45

Aliases

arxiv: 2108.13639 · arxiv_version: 2108.13639v3 · doi: 10.48550/arxiv.2108.13639 · pith_short_12: 4LGJQWBVQOIU · pith_short_16: 4LGJQWBVQOIUU7BD · pith_short_8: 4LGJQWBV

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/4LGJQWBVQOIUU7BDK52C5BNO7C \
  | 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: e2cc98583583914a7c2357742e85aef8985d23e7924e5262e1ea1a8465771e45

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "139ff6634420dbb68d6705f45eec691df468162f0a05d05fa996329fad10a2d7",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2021-08-31T06:41:56Z",
    "title_canon_sha256": "cc5f08ca380dd0687b4288937447b7ecc8d1d5be68239ab749e796fb414c1288"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.13639",
    "kind": "arxiv",
    "version": 3
  }
}