Pith Number

pith:NTN7J5CR

pith:2021:NTN7J5CRSPLUWF2HRFIB4FWHPC

not attested not anchored not stored refs pending

Sample Efficient Model Evaluation

David Barber, Emine Yilmaz, Jordan Burgess, Peter Hayes, Raza Habib

arxiv:2109.12043 v1 · 2021-09-24 · 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{NTN7J5CRSPLUWF2HRFIB4FWHPC}

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	2026-07-05T03:17:10.222471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cdbf4f45193d74b174789501e16c778bbb074435bb81ac8538fe73349ae8d0c

Aliases

arxiv: 2109.12043 · arxiv_version: 2109.12043v1 · doi: 10.48550/arxiv.2109.12043 · pith_short_12: NTN7J5CRSPLU · pith_short_16: NTN7J5CRSPLUWF2H · pith_short_8: NTN7J5CR

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/NTN7J5CRSPLUWF2HRFIB4FWHPC \
  | 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: 6cdbf4f45193d74b174789501e16c778bbb074435bb81ac8538fe73349ae8d0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "feac9bec8f98abe9860c5cec3a788cfa15544bda44c149ec93430919b720003a",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-09-24T16:03:58Z",
    "title_canon_sha256": "0abe37cee47f0b153b3e0cc79f335288ffbf399607901b75d9d36d101e3328e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.12043",
    "kind": "arxiv",
    "version": 1
  }
}