Pith Number

pith:CH65U3DM

pith:2021:CH65U3DMGMYQOTAI2HKWKCHSE5

not attested not anchored not stored refs pending

Featurized Density Ratio Estimation

Kristy Choi, Madeline Liao, Stefano Ermon

arxiv:2107.02212 v1 · 2021-07-05 · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CH65U3DMGMYQOTAI2HKWKCHSE5}

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	2026-07-05T02:55:17.994764Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11fdda6c6c3331074c08d1d56508f2274669d5d8e8b732c0463f06daf4bb9b3d

Aliases

arxiv: 2107.02212 · arxiv_version: 2107.02212v1 · doi: 10.48550/arxiv.2107.02212 · pith_short_12: CH65U3DMGMYQ · pith_short_16: CH65U3DMGMYQOTAI · pith_short_8: CH65U3DM

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/CH65U3DMGMYQOTAI2HKWKCHSE5 \
  | 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: 11fdda6c6c3331074c08d1d56508f2274669d5d8e8b732c0463f06daf4bb9b3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aab496e7d94f4e4fb0ddab7292dac822979ac1dec4f6bb1456b2e31041ba5dcd",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-07-05T18:30:26Z",
    "title_canon_sha256": "4f28220ecef34a1558ebec5ef62c7390311838d1d697ce467a3959d9d369b7d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.02212",
    "kind": "arxiv",
    "version": 1
  }
}