Pith Number

pith:XR6ZUAPS

pith:2016:XR6ZUAPSW2KJIAR3DG2BRZNU4S

not attested not anchored not stored refs pending

The challenge and promise of software citation for credit, identification, discovery, and reuse

Arfon M. Smith, Daniel S. Katz, Kyle E. Niemeyer

arxiv:1601.04734 v4 · 2016-01-18 · cs.CY · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XR6ZUAPSW2KJIAR3DG2BRZNU4S}

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	2026-05-18T01:00:19.575569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc7d9a01f2b69494023b19b418e5b4e4a9209286cd206422fdd47889ce67cd1d

Aliases

arxiv: 1601.04734 · arxiv_version: 1601.04734v4 · doi: 10.48550/arxiv.1601.04734 · pith_short_12: XR6ZUAPSW2KJ · pith_short_16: XR6ZUAPSW2KJIAR3 · pith_short_8: XR6ZUAPS

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/XR6ZUAPSW2KJIAR3DG2BRZNU4S \
  | 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: bc7d9a01f2b69494023b19b418e5b4e4a9209286cd206422fdd47889ce67cd1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "176879496ecea59bcea49fdc13525e50da1c840bef4e2666b67628e9f93df32c",
    "cross_cats_sorted": [
      "cs.DL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2016-01-18T21:50:30Z",
    "title_canon_sha256": "444fc65c0c208d7e7d057fdc0c73c1cdfeebe0e1cd170a72a35f5bbb2b40af93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.04734",
    "kind": "arxiv",
    "version": 4
  }
}