Pith Number

pith:4M4YMIUX

pith:2025:4M4YMIUXSL2BO5OR7IFX7IIY5S

not attested not anchored not stored refs pending

An instance of FreeCHR with refined operational semantics

Sascha Rechenberger, Thom Fr\"uhwirth

arxiv:2505.22155 v1 · 2025-05-28 · 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{4M4YMIUXSL2BO5OR7IFX7IIY5S}

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.

Cited by

1 paper in Pith

Optimized Execution of FreeCHR

Receipt and verification

First computed	2026-07-05T11:11:10.752963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e33986229792f41775d1fa0b7fa118ecb7961d0a112f8a939c6d086925ca6ec0

Aliases

arxiv: 2505.22155 · arxiv_version: 2505.22155v1 · doi: 10.48550/arxiv.2505.22155 · pith_short_12: 4M4YMIUXSL2B · pith_short_16: 4M4YMIUXSL2BO5OR · pith_short_8: 4M4YMIUX

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/4M4YMIUXSL2BO5OR7IFX7IIY5S \
  | 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: e33986229792f41775d1fa0b7fa118ecb7961d0a112f8a939c6d086925ca6ec0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66445aa83db9744baf63c90db6b216036512fbc38083a0b9c0eda5da2245923f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2025-05-28T09:19:33Z",
    "title_canon_sha256": "7aafffd8d9eb60f6b75d80a2e78aa1cb00cc941d1c90ffc44488f1986c045dd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.22155",
    "kind": "arxiv",
    "version": 1
  }
}