Pith Number

pith:PDLQAFZ3

pith:2021:PDLQAFZ3HZKKGCP5EP756KECKX

not attested not anchored not stored refs pending

Image color correction, enhancement, and editing

Mahmoud Afifi

arxiv:2107.13117 v1 · 2021-07-28 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PDLQAFZ3HZKKGCP5EP756KECKX}

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	2026-07-05T03:01:26.554879Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78d700173b3e54a309fd23ffdf288255f8e3357d0067410c113ed668e8479e31

Aliases

arxiv: 2107.13117 · arxiv_version: 2107.13117v1 · doi: 10.48550/arxiv.2107.13117 · pith_short_12: PDLQAFZ3HZKK · pith_short_16: PDLQAFZ3HZKKGCP5 · pith_short_8: PDLQAFZ3

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/PDLQAFZ3HZKKGCP5EP756KECKX \
  | 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: 78d700173b3e54a309fd23ffdf288255f8e3357d0067410c113ed668e8479e31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2466601aa7674215261ac7adeba382070c19c9e6205ee8bdb81a8f1689ac45ac",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-07-28T01:14:12Z",
    "title_canon_sha256": "42ec7aa8f1548034d12dcbdcf72f26da7f9f0ae3c42d5defb66c8267f875ebb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.13117",
    "kind": "arxiv",
    "version": 1
  }
}