Pith Number

pith:CX52UGMO

pith:2019:CX52UGMO45FZLCDB7DVLW6JNAU

not attested not anchored not stored refs pending

Guess What's on my Screen? Clustering Smartphone Screenshots with Active Learning

Agnese Chiatti, Byron Reeves, Dolzodmaa Davaasuren, Nilam Ram, Prasenjit Mitra, Thomas Robinson

arxiv:1901.02701 v2 · 2019-01-09 · cs.CV · cs.LG · cs.MM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CX52UGMO45FZLCDB7DVLW6JNAU}

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	2026-05-17T23:56:36.113979Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15fbaa198ee74b958861f8eabb792d051f8fb8d5841fa23c6c23c977eac3067b

Aliases

arxiv: 1901.02701 · arxiv_version: 1901.02701v2 · doi: 10.48550/arxiv.1901.02701 · pith_short_12: CX52UGMO45FZ · pith_short_16: CX52UGMO45FZLCDB · pith_short_8: CX52UGMO

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/CX52UGMO45FZLCDB7DVLW6JNAU \
  | 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: 15fbaa198ee74b958861f8eabb792d051f8fb8d5841fa23c6c23c977eac3067b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4953b170219e6966388abed4cdd3bf37c59c09913743ca5593a27ef2d423d361",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.MM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-01-09T12:51:36Z",
    "title_canon_sha256": "4330106cfbce1e5da1d43b1cd062b3380ef57adf5816afdbabad0f1a0447963b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02701",
    "kind": "arxiv",
    "version": 2
  }
}