Pith Number

pith:XDCNTLA4

pith:2016:XDCNTLA4CQ3XVBTHPJB64R6JUP

not attested not anchored not stored refs pending

From Design Contracts to Component Requirements Verification

Andrew Gacek, Darren Cofer, Jing Liu, John D. Backes

arxiv:1603.02130 v2 · 2016-03-07 · cs.SE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XDCNTLA4CQ3XVBTHPJB64R6JUP}

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	2026-05-18T01:16:24.168002Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8c4d9ac1c14377a86677a43ee47c9a3d01ad63d56e6d34e30309ae915905202

Aliases

arxiv: 1603.02130 · arxiv_version: 1603.02130v2 · doi: 10.48550/arxiv.1603.02130 · pith_short_12: XDCNTLA4CQ3X · pith_short_16: XDCNTLA4CQ3XVBTH · pith_short_8: XDCNTLA4

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/XDCNTLA4CQ3XVBTHPJB64R6JUP \
  | 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: b8c4d9ac1c14377a86677a43ee47c9a3d01ad63d56e6d34e30309ae915905202

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c26877fa9f596687eef117f834d595dd2fa2c4d87b5e71b08da258125aa47565",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2016-03-07T16:09:42Z",
    "title_canon_sha256": "879ebfeaae2e8d87779ac55626c09ded7e768ffc7374c533887a17c0770044ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.02130",
    "kind": "arxiv",
    "version": 2
  }
}