Pith Number

pith:VGZDEQJV

pith:2021:VGZDEQJVAZAL6F2Z5VNAXBFQGK

not attested not anchored not stored refs pending

Contrastive Learning for Unsupervised Radar Place Recognition

Daniele De Martini, Matthew Gadd, Paul Newman

arxiv:2110.02744 v1 · 2021-10-06 · cs.CV · cs.IR · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VGZDEQJVAZAL6F2Z5VNAXBFQGK}

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	2026-07-05T03:20:29.640297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9b23241350640bf1759ed5a0b84b0328bce829e5086708b027e49cd34a36801

Aliases

arxiv: 2110.02744 · arxiv_version: 2110.02744v1 · doi: 10.48550/arxiv.2110.02744 · pith_short_12: VGZDEQJVAZAL · pith_short_16: VGZDEQJVAZAL6F2Z · pith_short_8: VGZDEQJV

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/VGZDEQJVAZAL6F2Z5VNAXBFQGK \
  | 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: a9b23241350640bf1759ed5a0b84b0328bce829e5086708b027e49cd34a36801

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c397c42e8f28dceea664fcabb8f04373fa37cfba003b877a77ae36204513683f",
    "cross_cats_sorted": [
      "cs.IR",
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-10-06T13:34:09Z",
    "title_canon_sha256": "e9996366efcf079da9300e9be310b19232ff95870d081c1892110eb7d242ca06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.02744",
    "kind": "arxiv",
    "version": 1
  }
}