Pith Number

pith:GLVYFMVB

pith:2019:GLVYFMVBUOQUAMKQDC7VJ2FTEC

not attested not anchored not stored refs pending

Extending OCaml's 'open'

Inc), Jeremy Yallop (University of Cambridge), Runhang Li (Twitter

arxiv:1905.06543 v1 · 2019-05-16 · 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{GLVYFMVBUOQUAMKQDC7VJ2FTEC}

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	2026-05-17T23:46:01.966231Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32eb82b2a1a3a140315018bf54e8b3208f6e1e071960e6db6360ee72f7f6f1b5

Aliases

arxiv: 1905.06543 · arxiv_version: 1905.06543v1 · doi: 10.48550/arxiv.1905.06543 · pith_short_12: GLVYFMVBUOQU · pith_short_16: GLVYFMVBUOQUAMKQ · pith_short_8: GLVYFMVB

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/GLVYFMVBUOQUAMKQDC7VJ2FTEC \
  | 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: 32eb82b2a1a3a140315018bf54e8b3208f6e1e071960e6db6360ee72f7f6f1b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3d57ef06890f9996ce301338707c25930237d0687d5910b28b7a56329f12893",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2019-05-16T06:11:17Z",
    "title_canon_sha256": "6addb515507a5ffe83555118db6c3ee95a901177356c9792d62b10b0e2c39c9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.06543",
    "kind": "arxiv",
    "version": 1
  }
}