Pith Number

pith:HBKSY3A6

pith:2025:HBKSY3A6DJLB4QCRQNN6IKYHBW

not attested not anchored not stored refs pending

Classifying and Tracking International Aid Contribution Towards SDGs

Dongjoon Lee, Junho Lee, Kyeongjin Ahn, Kyung Ryul Park, Meeyoung Cha, Sungwon Park, Yubin Choi

arxiv:2505.15223 v2 · 2025-05-21 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HBKSY3A6DJLB4QCRQNN6IKYHBW}

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	2026-07-05T11:26:31.573607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38552c6c1e1a561e4051835be42b070d8cf2b566ecb117ca65df555754a3fa3c

Aliases

arxiv: 2505.15223 · arxiv_version: 2505.15223v2 · doi: 10.48550/arxiv.2505.15223 · pith_short_12: HBKSY3A6DJLB · pith_short_16: HBKSY3A6DJLB4QCR · pith_short_8: HBKSY3A6

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/HBKSY3A6DJLB4QCRQNN6IKYHBW \
  | 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: 38552c6c1e1a561e4051835be42b070d8cf2b566ecb117ca65df555754a3fa3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a34baf161cf290461c3e621118ca3b8e2a8ee061bc8f1cbfb57e123553c6feb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2025-05-21T07:50:40Z",
    "title_canon_sha256": "d080d0b7a5b3ab496c5d579047a86491db8dd19a3cff40a568d21b97baaf7d7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.15223",
    "kind": "arxiv",
    "version": 2
  }
}