Pith Number

pith:S77MUFYU

pith:2020:S77MUFYUWHFTMJUBH3Y6O7AWET

not attested not anchored not stored refs pending

Corpse Reviver: Sound and Efficient Gradual Typing via Contract Verification

Cameron Moy, David Van Horn, Ph\'uc C. Nguy\~en, Sam Tobin-Hochstadt

arxiv:2007.12630 v2 · 2020-07-24 · 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{S77MUFYUWHFTMJUBH3Y6O7AWET}

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	2026-07-05T01:41:55.978533Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97feca1714b1cb3626813ef1e77c1624d487f99867a26923fd875ccc174f83c9

Aliases

arxiv: 2007.12630 · arxiv_version: 2007.12630v2 · doi: 10.48550/arxiv.2007.12630 · pith_short_12: S77MUFYUWHFT · pith_short_16: S77MUFYUWHFTMJUB · pith_short_8: S77MUFYU

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/S77MUFYUWHFTMJUBH3Y6O7AWET \
  | 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: 97feca1714b1cb3626813ef1e77c1624d487f99867a26923fd875ccc174f83c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73d8e69ef022900f1644683814fba9e25334ce885f2db6bc9aa0360680813250",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2020-07-24T16:30:42Z",
    "title_canon_sha256": "342c589788d72ef5baa72a21c3b875ad9cfc6cb4add92413d7833e66134ee4b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.12630",
    "kind": "arxiv",
    "version": 2
  }
}