Pith Number

pith:O7JIUQRQ

pith:2019:O7JIUQRQUPFAPBUVK2J23DLNBS

not attested not anchored not stored refs pending

SafeStrings: Representing Strings as Structured Data

David Clark, David Kelly, Earl T. Barr, Mark Marron

arxiv:1904.11254 v1 · 2019-04-25 · 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{O7JIUQRQUPFAPBUVK2J23DLNBS}

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	2026-05-17T23:47:45.376704Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77d28a4230a3ca0786955693ad8d6d0c89f63258f7beccd692df265b61e870ea

Aliases

arxiv: 1904.11254 · arxiv_version: 1904.11254v1 · doi: 10.48550/arxiv.1904.11254 · pith_short_12: O7JIUQRQUPFA · pith_short_16: O7JIUQRQUPFAPBUV · pith_short_8: O7JIUQRQ

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/O7JIUQRQUPFAPBUVK2J23DLNBS \
  | 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: 77d28a4230a3ca0786955693ad8d6d0c89f63258f7beccd692df265b61e870ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ee43a6f22cfbb614ee0962987f314aec01b2b70f7973eef3b5dd69af2c4d652",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2019-04-25T10:46:41Z",
    "title_canon_sha256": "f0127cc1999a8812f936a66f42269822934ce1fb0f8a50160ffc67fcb0cbbbea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.11254",
    "kind": "arxiv",
    "version": 1
  }
}