Pith Number

pith:MRSR2R4Q

pith:2019:MRSR2R4QHZA464YTXYNZ4V472B

not attested not anchored not stored refs pending

Object-oriented requirements: reusable, understandable, verifiable

Alexandr Naumchev

arxiv:1903.04165 v2 · 2019-03-11 · 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{MRSR2R4QHZA464YTXYNZ4V472B}

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	2026-05-17T23:51:09.262182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64651d47903e41cf7313be1b9e579fd070dbab9668cc252ab1e1d34ffde81be5

Aliases

arxiv: 1903.04165 · arxiv_version: 1903.04165v2 · doi: 10.48550/arxiv.1903.04165 · pith_short_12: MRSR2R4QHZA4 · pith_short_16: MRSR2R4QHZA464YT · pith_short_8: MRSR2R4Q

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/MRSR2R4QHZA464YTXYNZ4V472B \
  | 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: 64651d47903e41cf7313be1b9e579fd070dbab9668cc252ab1e1d34ffde81be5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70ab55b13046acd5232a6b1708190ea50127e79ef8dae8e18b97b75af1681460",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2019-03-11T08:18:32Z",
    "title_canon_sha256": "68bddeeec506ad337530bbe1a294e92c0f0b58fd94f99f4974aaa7a42bf3b893"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.04165",
    "kind": "arxiv",
    "version": 2
  }
}