Pith Number

pith:W5OTUTUC

pith:2009:W5OTUTUCTDAILIM5RZPURBU5UK

not attested not anchored not stored refs pending

Stromgren Photometry of the Delta Scuti Stars 7 Aql and 8 Aql

J.H. Pena, L. Fox Machado, L. Parrao, M. Alvarez

arxiv:0911.4569 v1 · 2009-11-24 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W5OTUTUCTDAILIM5RZPURBU5UK}

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	2026-05-18T02:34:03.864221Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b75d3a4e8298c085a19d8e5f48869da2820e90be71b0f3b38da38812b7662b2d

Aliases

arxiv: 0911.4569 · arxiv_version: 0911.4569v1 · doi: 10.48550/arxiv.0911.4569 · pith_short_12: W5OTUTUCTDAI · pith_short_16: W5OTUTUCTDAILIM5 · pith_short_8: W5OTUTUC

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/W5OTUTUCTDAILIM5RZPURBU5UK \
  | 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: b75d3a4e8298c085a19d8e5f48869da2820e90be71b0f3b38da38812b7662b2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f1ac77176edfd227deeb4a39b6600fced85d636a417c8d3c342341c533c69ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-11-24T08:31:07Z",
    "title_canon_sha256": "dd3cf785b6a311266a81ac3d550364eca66807fbfad96fb6e2abf1b0ebbdb2ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4569",
    "kind": "arxiv",
    "version": 1
  }
}