Pith Number

pith:PYGMZDHG

pith:2026:PYGMZDHGI2SPI2A24LPGTKIWEE

not attested not anchored not stored refs pending

Gradually Verifying Unfolding Expressions & Pure Functions

Hazel Torek, Jenna DiVincenzo, Jonathan Aldrich, Long Tien Nguyen, Priyam Gupta

arxiv:2607.15383 v1 · 2026-07-16 · 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{PYGMZDHGI2SPI2A24LPGTKIWEE}

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	2026-07-20T00:18:30.541857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e0ccc8ce646a4f4681ae2de69a916213362e68a3ebe71316debb2b5743b62d3

Aliases

arxiv: 2607.15383 · arxiv_version: 2607.15383v1 · doi: 10.48550/arxiv.2607.15383 · pith_short_12: PYGMZDHGI2SP · pith_short_16: PYGMZDHGI2SPI2A2 · pith_short_8: PYGMZDHG

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/PYGMZDHGI2SPI2A24LPGTKIWEE \
  | 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: 7e0ccc8ce646a4f4681ae2de69a916213362e68a3ebe71316debb2b5743b62d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27490314a7ab91a43db984fdb91e28f0371ac5e3fd1b1990008d3a2de066cfc1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2026-07-16T18:33:42Z",
    "title_canon_sha256": "fdd6c8656921c5321481d6b0b9fb9e29ce4bf450d1cd216ec0ad9a32c9ee38bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.15383",
    "kind": "arxiv",
    "version": 1
  }
}