Pith Number

pith:U7D6H6KB

pith:2019:U7D6H6KBKHFD7JBGG3EDZSW2MV

not attested not anchored not stored refs pending

Casting Light on Invisible Cities: Computationally Engaging with Literary Criticism

Mohit Iyyer, Shufan Wang

arxiv:1904.08386 v1 · 2019-04-17 · cs.LG · cs.CL · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U7D6H6KBKHFD7JBGG3EDZSW2MV}

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	2026-05-17T23:48:17.824508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7c7e3f94151ca3fa42636c83ccada65649281d8b4feb47e2767acdd34566fd1

Aliases

arxiv: 1904.08386 · arxiv_version: 1904.08386v1 · doi: 10.48550/arxiv.1904.08386 · pith_short_12: U7D6H6KBKHFD · pith_short_16: U7D6H6KBKHFD7JBG · pith_short_8: U7D6H6KB

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/U7D6H6KBKHFD7JBGG3EDZSW2MV \
  | 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: a7c7e3f94151ca3fa42636c83ccada65649281d8b4feb47e2767acdd34566fd1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e61b06bed69c3766fafc695748694c455541385b01a8f82f9262a0f8ee8f46e",
    "cross_cats_sorted": [
      "cs.CL",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-04-17T17:37:33Z",
    "title_canon_sha256": "e0f8c42b330a356722c001c36e678593bbf4c31902153ff8d350e9eb50d7a236"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08386",
    "kind": "arxiv",
    "version": 1
  }
}