Pith Number

pith:U7C57CHL

pith:2022:U7C57CHLNP3O2Y6TUVMIZ3PMGE

not attested not anchored not stored refs pending

Extracting Software Requirements from Unstructured Documents

Alessandra Bagnato, Alexandr Naumchev, Andrey Sadovykh, Kirill Yakovlev, Vladimir Ivanov

arxiv:2202.02135 v1 · 2022-02-04 · 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{U7C57CHLNP3O2Y6TUVMIZ3PMGE}

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	2026-07-05T03:54:08.978619Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7c5df88eb6bf6ed63d3a5588cedec310a944c9434b02864b3e5b7e2f6df4e01

Aliases

arxiv: 2202.02135 · arxiv_version: 2202.02135v1 · doi: 10.48550/arxiv.2202.02135 · pith_short_12: U7C57CHLNP3O · pith_short_16: U7C57CHLNP3O2Y6T · pith_short_8: U7C57CHL

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/U7C57CHLNP3O2Y6TUVMIZ3PMGE \
  | 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: a7c5df88eb6bf6ed63d3a5588cedec310a944c9434b02864b3e5b7e2f6df4e01

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "639a7d22010edeefd11fe3695df995a438d259355b1b0d2c02f21c9ff60fb70b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2022-02-04T14:00:17Z",
    "title_canon_sha256": "e80e063508c153a47088ef4614bb7342f1e59d1543da3f973a03ac30dd4b4300"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.02135",
    "kind": "arxiv",
    "version": 1
  }
}