Pith Number

pith:WSYHPOTX

pith:2012:WSYHPOTXAXG4XB6BTM7AFDGYKG

not attested not anchored not stored refs pending

Clear sky fraction above Indonesia: an analysis for astronomical site selection

B. Dermawan, D. Herdiwijaya, P. Mahasena, P. W. Premadi, T. Hidayat, T. W. Hadi

arxiv:1209.1234 v1 · 2012-09-06 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WSYHPOTXAXG4XB6BTM7AFDGYKG}

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	2026-05-18T01:54:39.432981Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4b077ba7705cdcb87c19b3e028cd851a5813712d66d51f9a72491b9bb9955d1

Aliases

arxiv: 1209.1234 · arxiv_version: 1209.1234v1 · doi: 10.48550/arxiv.1209.1234 · pith_short_12: WSYHPOTXAXG4 · pith_short_16: WSYHPOTXAXG4XB6B · pith_short_8: WSYHPOTX

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/WSYHPOTXAXG4XB6BTM7AFDGYKG \
  | 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: b4b077ba7705cdcb87c19b3e028cd851a5813712d66d51f9a72491b9bb9955d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "884e23032181b7bbb6dafa7bc53ba8d2ffa157249bebb62a784307521ff11f4d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-09-06T09:27:46Z",
    "title_canon_sha256": "022519b916bf921d2a69f788f12df5f15a707fa83f9a5f3ef07325db9fd4fc9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1234",
    "kind": "arxiv",
    "version": 1
  }
}