Pith Number

pith:H3R6IPRL

pith:2019:H3R6IPRLEUJMB2IPMBPPYCKUAK

not attested not anchored not stored refs pending

Unsupervised Image Matching and Object Discovery as Optimization

Francis Bach, Huy V. Vo, Jean Ponce, Kai Han, Minsu Cho, Patrick Perez, Yann LeCun

arxiv:1904.03148 v1 · 2019-04-05 · 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{H3R6IPRLEUJMB2IPMBPPYCKUAK}

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	2026-05-17T23:49:18.433799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ee3e43e2b2512c0e90f605efc0954028df0c4c46deff1ec8e743811d78f623a

Aliases

arxiv: 1904.03148 · arxiv_version: 1904.03148v1 · doi: 10.48550/arxiv.1904.03148 · pith_short_12: H3R6IPRLEUJM · pith_short_16: H3R6IPRLEUJMB2IP · pith_short_8: H3R6IPRL

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/H3R6IPRLEUJMB2IPMBPPYCKUAK \
  | 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: 3ee3e43e2b2512c0e90f605efc0954028df0c4c46deff1ec8e743811d78f623a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "211dd6aa81e55d3d8994a3030ea9c6ffe2e256893858ab3b2156205b2e45873c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-04-05T16:29:44Z",
    "title_canon_sha256": "b40e7dae49b2044c119c308215d887a54e1bcb832047671148289b2533bf0040"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.03148",
    "kind": "arxiv",
    "version": 1
  }
}