Pith Number

pith:57R4M6M4

pith:2012:57R4M6M4PC3NULNTPGZG7FFZS3

not attested not anchored not stored refs pending

Automated Feedback Generation for Introductory Programming Assignments

Armando Solar-Lezama, Rishabh Singh, Sumit Gulwani

arxiv:1204.1751 v4 · 2012-04-08 · cs.PL · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{57R4M6M4PC3NULNTPGZG7FFZS3}

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	2026-05-18T03:40:38.566681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efe3c6799c78b6da2db379b26f94b996df1389333eac5f5879a57d4e91004990

Aliases

arxiv: 1204.1751 · arxiv_version: 1204.1751v4 · doi: 10.48550/arxiv.1204.1751 · pith_short_12: 57R4M6M4PC3N · pith_short_16: 57R4M6M4PC3NULNT · pith_short_8: 57R4M6M4

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/57R4M6M4PC3NULNTPGZG7FFZS3 \
  | 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: efe3c6799c78b6da2db379b26f94b996df1389333eac5f5879a57d4e91004990

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3a329a559a84aad15e2fe280548b61b5bbad9b0fb7be78e29c3f20799536850",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2012-04-08T18:08:43Z",
    "title_canon_sha256": "1e281f92a818a6b2ec86c0f5c29d0d63b3f729c2547621f7475b29134bd76a46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1751",
    "kind": "arxiv",
    "version": 4
  }
}