Pith Number

pith:BPHXS2CE

pith:2018:BPHXS2CEOQS6WQRDME5RWWYHFK

not attested not anchored not stored refs pending

From Face Recognition to Models of Identity: A Bayesian Approach to Learning about Unknown Identities from Unsupervised Data

Daniel C. Castro, Sebastian Nowozin

arxiv:1807.07872 v1 · 2018-07-20 · 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{BPHXS2CEOQS6WQRDME5RWWYHFK}

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	2026-05-18T00:03:27.405695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bcf7968447425eb4223613b1b5b072a8970d206f517373e509dcdcec9f31870

Aliases

arxiv: 1807.07872 · arxiv_version: 1807.07872v1 · doi: 10.48550/arxiv.1807.07872 · pith_short_12: BPHXS2CEOQS6 · pith_short_16: BPHXS2CEOQS6WQRD · pith_short_8: BPHXS2CE

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/BPHXS2CEOQS6WQRDME5RWWYHFK \
  | 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: 0bcf7968447425eb4223613b1b5b072a8970d206f517373e509dcdcec9f31870

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8719577c0dabb453ff0d56cbb6b283958f86311c085431aad881d52b7fe7b1c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-07-20T14:40:10Z",
    "title_canon_sha256": "2b28fd9a93c716146ce305d9f8f176372fffeb66b31574e018405c7b19cc8ae8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07872",
    "kind": "arxiv",
    "version": 1
  }
}