Pith Number

pith:WS4CIUI2

pith:1999:WS4CIUI2V4NMF7HJS5EFYFRKQT

not attested not anchored not stored refs pending

An analytic study of Bondi-Hoyle-Lyttleton accretion

CEA, France), M. Ruffert (Univ. of Edinburgh, Saclay, Scotland), T. Foglizzo (SAp

arxiv:astro-ph/9905226 v1 · 1999-05-18 · 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{WS4CIUI2V4NMF7HJS5EFYFRKQT}

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	2026-07-04T14:16:43.166199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4b824511aaf1ac2fce997485c162a84ddfafa67458ebf7cfad00f08dcfac6c0

Aliases

arxiv: astro-ph/9905226 · arxiv_version: astro-ph/9905226v1 · doi: 10.48550/arxiv.astro-ph/9905226 · pith_short_12: WS4CIUI2V4NM · pith_short_16: WS4CIUI2V4NMF7HJ · pith_short_8: WS4CIUI2

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/WS4CIUI2V4NMF7HJS5EFYFRKQT \
  | 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: b4b824511aaf1ac2fce997485c162a84ddfafa67458ebf7cfad00f08dcfac6c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68b005c6413ce4c3f7158b8eb3ce1ed4551d7667a869aaa3946374a63f0700c8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-05-18T07:25:07Z",
    "title_canon_sha256": "948375029b126a4c031750dc6b893e9f51e736882283ab0312ffd147c00cc43b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9905226",
    "kind": "arxiv",
    "version": 1
  }
}