Pith Number

pith:H75QP7H6

pith:2026:H75QP7H67ZHM27KZBF3OHCBXIP

not attested not anchored not stored refs pending

Contextual MetaML: Syntax and Full Abstraction

Andrzej S. Murawski, C.-H. Luke Ong, Haoxuan Yin

arxiv:2602.03033 v2 · 2026-02-03 · 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{H75QP7H67ZHM27KZBF3OHCBXIP}

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	2026-05-20T00:05:41.496334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ffb07fcfefe4ecd7d590976e3883743d33fa893db343590d3bbef3133398cb3

Aliases

arxiv: 2602.03033 · arxiv_version: 2602.03033v2 · doi: 10.48550/arxiv.2602.03033 · pith_short_12: H75QP7H67ZHM · pith_short_16: H75QP7H67ZHM27KZ · pith_short_8: H75QP7H6

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/H75QP7H67ZHM27KZBF3OHCBXIP \
  | 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: 3ffb07fcfefe4ecd7d590976e3883743d33fa893db343590d3bbef3133398cb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae7da64a9dc8c451d3e61de6d0e661fc28bc8fcd0df7a483b218ee7d07c7399c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2026-02-03T03:01:40Z",
    "title_canon_sha256": "1839a19dbed055dd2d31bfd2eff60720bf400cc6faa4c255f5b7d1a809dac674"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.03033",
    "kind": "arxiv",
    "version": 2
  }
}