Pith Number

pith:EX32KWB5

pith:1997:EX32KWB5LLJZAGPPTE2XL2JOH7

not attested not anchored not stored refs pending

First results from the UBC etch-alignment mosaic CCD

G.A.H.Walker, G.S.Burley, S.C.Chapman

arxiv:astro-ph/9706267 v1 · 1997-06-26 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EX32KWB5LLJZAGPPTE2XL2JOH7}

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	2026-05-18T01:40:17.210004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25f7a5583d5ad39019ef993575e92e3fe639fd8a5462f55e415a43fa593c281c

Aliases

arxiv: astro-ph/9706267 · arxiv_version: astro-ph/9706267v1 · doi: 10.48550/arxiv.astro-ph/9706267 · pith_short_12: EX32KWB5LLJZ · pith_short_16: EX32KWB5LLJZAGPP · pith_short_8: EX32KWB5

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/EX32KWB5LLJZAGPPTE2XL2JOH7 \
  | 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: 25f7a5583d5ad39019ef993575e92e3fe639fd8a5462f55e415a43fa593c281c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4559c2892d806fa8d9b45b5222d6e4388311599da4e25500d29e2280070069f3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-06-26T23:00:39Z",
    "title_canon_sha256": "6d693cc82a1d7c45c302f6139e9a5d36de560df07c4e16c2b5695a355e749c12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9706267",
    "kind": "arxiv",
    "version": 1
  }
}