Pith Number

pith:SA3OBSYM

pith:2021:SA3OBSYMB4QNYBGTKWVR766JAX

not attested not anchored not stored refs pending

Face Identification Proficiency Test Designed Using Item Response Theory

Alice J. O'Toole, Amy N. Yates, Carina A. Hahn, G\'eraldine Jeckeln, Jacqueline G. Cavazos, Larry Tang, P. Jonathon Phillips, Ying Hu

arxiv:2106.15323 v3 · 2021-06-22 · cs.CV · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SA3OBSYMB4QNYBGTKWVR766JAX}

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	2026-07-05T06:19:50.642931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9036e0cb0c0f20dc04d355ab1ffbc905ef30c85bed799c7671c898981f9b40b1

Aliases

arxiv: 2106.15323 · arxiv_version: 2106.15323v3 · doi: 10.48550/arxiv.2106.15323 · pith_short_12: SA3OBSYMB4QN · pith_short_16: SA3OBSYMB4QNYBGT · pith_short_8: SA3OBSYM

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/SA3OBSYMB4QNYBGTKWVR766JAX \
  | 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: 9036e0cb0c0f20dc04d355ab1ffbc905ef30c85bed799c7671c898981f9b40b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d64656aea0da167647cbd82216123bea90514d03040f0f97bd1eb8388e0c720b",
    "cross_cats_sorted": [
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-06-22T22:37:32Z",
    "title_canon_sha256": "c2f333ec5575e6ff6cdb1c494657ccc3673f7c1e7a27f4b19f5cd2d633dd3279"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.15323",
    "kind": "arxiv",
    "version": 3
  }
}