Pith Number

pith:SFPKNZQX

pith:2017:SFPKNZQXBIJD7CDOGMV4F3ZD73

not attested not anchored not stored refs pending

A Model for Donation Verification

Bin Fu, Fengjuan Zhu, John Abraham

arxiv:1708.07973 v1 · 2017-08-26 · cs.DS · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SFPKNZQXBIJD7CDOGMV4F3ZD73}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:36:37.469442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

915ea6e6170a123f886e332bc2ef23fef04ea60d485fe53206cbf29f724709d3

Aliases

arxiv: 1708.07973 · arxiv_version: 1708.07973v1 · doi: 10.48550/arxiv.1708.07973 · pith_short_12: SFPKNZQXBIJD · pith_short_16: SFPKNZQXBIJD7CDO · pith_short_8: SFPKNZQX

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/SFPKNZQXBIJD7CDOGMV4F3ZD73 \
  | 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: 915ea6e6170a123f886e332bc2ef23fef04ea60d485fe53206cbf29f724709d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b04441b6904e26d5a0bad22833840afd4700eed6af2350fac567101079bcfb87",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-08-26T13:58:08Z",
    "title_canon_sha256": "d531f18f7ac3d16a8a2cd392fe5e9fd149c6ba442d0d59f1109fa6ad2a697f22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.07973",
    "kind": "arxiv",
    "version": 1
  }
}