Pith Number

pith:LDKHUM4A

pith:2018:LDKHUM4AX2EJS76PAI2GURD3GN

not attested not anchored not stored refs pending

The RedPRL Proof Assistant (Invited Paper)

Carlo Angiuli, Evan Cavallo, Jonathan Sterling, Kuen-Bang Hou (Favonia), Robert Harper

arxiv:1807.01869 v1 · 2018-07-05 · cs.LO · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LDKHUM4AX2EJS76PAI2GURD3GN}

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	2026-05-18T00:11:28.430021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58d47a3380be88997fcf02346a447b335318325dc35889cd281f43b824381dd2

Aliases

arxiv: 1807.01869 · arxiv_version: 1807.01869v1 · doi: 10.48550/arxiv.1807.01869 · pith_short_12: LDKHUM4AX2EJ · pith_short_16: LDKHUM4AX2EJS76P · pith_short_8: LDKHUM4A

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/LDKHUM4AX2EJS76PAI2GURD3GN \
  | 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: 58d47a3380be88997fcf02346a447b335318325dc35889cd281f43b824381dd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "780725975dd4e0b5ac506ccad965b9b4eb84fda9fabef80b172637e3aa57eedc",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-07-05T07:08:44Z",
    "title_canon_sha256": "640e9a71fe2df34312045662c00a9ed25d5691976feafc3bbf1ad9605264b521"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01869",
    "kind": "arxiv",
    "version": 1
  }
}