Pith Number

pith:HPMMBZMN

pith:2015:HPMMBZMNQRJRNAKDFQ2QPUOACW

not attested not anchored not stored refs pending

Bounded Verification with On-the-Fly Discrepancy Computation

Chuchu Fan, Sayan Mitra

arxiv:1502.01801 v1 · 2015-02-06 · cs.SY · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HPMMBZMNQRJRNAKDFQ2QPUOACW}

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	2026-05-18T02:27:50.638585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bd8c0e58d84531681432c3507d1c015af391b9e69c4373468163443d024fd97

Aliases

arxiv: 1502.01801 · arxiv_version: 1502.01801v1 · doi: 10.48550/arxiv.1502.01801 · pith_short_12: HPMMBZMNQRJR · pith_short_16: HPMMBZMNQRJRNAKD · pith_short_8: HPMMBZMN

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/HPMMBZMNQRJRNAKDFQ2QPUOACW \
  | 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: 3bd8c0e58d84531681432c3507d1c015af391b9e69c4373468163443d024fd97

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "648982440b444c08a9d45f19ed561dabe6411c732156003d420e2ca5529d8c7f",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2015-02-06T05:32:03Z",
    "title_canon_sha256": "59c897f317576587176e88a7abf9c314930fd601804ac556783188bec4006e75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.01801",
    "kind": "arxiv",
    "version": 1
  }
}