Pith Number

pith:NNODDW44

pith:2020:NNODDW44ZPKV7V2AYD4MXWWFCC

not attested not anchored not stored refs pending

Unsupervised Semantic Hashing with Pairwise Reconstruction

Casper Hansen, Christian Hansen, Christina Lioma, Jakob Grue Simonsen, Stephen Alstrup

arxiv:2007.00380 v1 · 2020-07-01 · cs.IR · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNODDW44ZPKV7V2AYD4MXWWFCC}

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	2026-07-05T01:15:31.280349Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b5c31db9ccbd55fd740c0f8cbdac510990d9203e707efd7cc46f5fc758cdaa0

Aliases

arxiv: 2007.00380 · arxiv_version: 2007.00380v1 · doi: 10.48550/arxiv.2007.00380 · pith_short_12: NNODDW44ZPKV · pith_short_16: NNODDW44ZPKV7V2A · pith_short_8: NNODDW44

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/NNODDW44ZPKV7V2AYD4MXWWFCC \
  | 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: 6b5c31db9ccbd55fd740c0f8cbdac510990d9203e707efd7cc46f5fc758cdaa0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7f0f8de66fff5b1a2670608ba4ed6167fab3a0179c55617cbfa3a83cc9615bf",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2020-07-01T10:54:27Z",
    "title_canon_sha256": "1a0a794f93a6202664f4dfdfb7d890cb9f3ff400d7170d1fcaa8046610eee1da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.00380",
    "kind": "arxiv",
    "version": 1
  }
}