Pith Number

pith:K7ATKFEV

pith:2015:K7ATKFEV2E5WQAVMH3VJBZIY3F

not attested not anchored not stored refs pending

Everything old is new again: Quoted Domain Specific Languages

Josef Svenningsson, Philip Wadler, Sam Lindley, Shayan Najd

arxiv:1507.07264 v2 · 2015-07-26 · 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{K7ATKFEV2E5WQAVMH3VJBZIY3F}

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	2026-05-18T01:35:54.011477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57c1351495d13b6802ac3eea90e518d95590d7756b961c8c568b07c046b1045b

Aliases

arxiv: 1507.07264 · arxiv_version: 1507.07264v2 · doi: 10.48550/arxiv.1507.07264 · pith_short_12: K7ATKFEV2E5W · pith_short_16: K7ATKFEV2E5WQAVM · pith_short_8: K7ATKFEV

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/K7ATKFEV2E5WQAVMH3VJBZIY3F \
  | 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: 57c1351495d13b6802ac3eea90e518d95590d7756b961c8c568b07c046b1045b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61199db6a1263094d6e0d4bd578f4914743286a71cf147163c8cd1efd86112e7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2015-07-26T23:11:16Z",
    "title_canon_sha256": "88fd2662c95a4126dc665f2538bb5027f23b8c6601643e5fcc35748b28257ca3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07264",
    "kind": "arxiv",
    "version": 2
  }
}