Pith Number

pith:4RXC6SPD

pith:2019:4RXC6SPDWQ6L5DFR6BKACNDWQE

not attested not anchored not stored refs pending

Predicting Variable Types in Dynamically Typed Programming Languages

Abhinav Jangda, Gaurav Anand

arxiv:1901.05138 v1 · 2019-01-16 · 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{4RXC6SPDWQ6L5DFR6BKACNDWQE}

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	2026-05-17T23:56:11.773908Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e46e2f49e3b43cbe8cb1f054013476813a7cfde7ac99256eb2c2de6171358bda

Aliases

arxiv: 1901.05138 · arxiv_version: 1901.05138v1 · doi: 10.48550/arxiv.1901.05138 · pith_short_12: 4RXC6SPDWQ6L · pith_short_16: 4RXC6SPDWQ6L5DFR · pith_short_8: 4RXC6SPD

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/4RXC6SPDWQ6L5DFR6BKACNDWQE \
  | 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: e46e2f49e3b43cbe8cb1f054013476813a7cfde7ac99256eb2c2de6171358bda

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3b3e69f5dab29f8bbac557a2ae49e2f58af29af2d91f8317e50f784be46ed83",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2019-01-16T05:42:22Z",
    "title_canon_sha256": "3790978ad20a0dd62623fcd23b54a175b567971f663e9e6f852002d80740adf4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.05138",
    "kind": "arxiv",
    "version": 1
  }
}