Pith Number

pith:7HB454MU

pith:2002:7HB454MUIFJYKIDWHJLX3HKNC3

not attested not anchored not stored refs pending

VLT spectra of the companion candidate Cha Ha 5/cc 1

Eike Guenther (TLS), Ralph Neuhaeuser (MPE), Wolfgang Brandner (ESO)

arxiv:astro-ph/0207549 v1 · 2002-07-25 · 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{7HB454MUIFJYKIDWHJLX3HKNC3}

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	2026-07-04T14:12:07.829372Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9c3cef19441538520763a577d9d4d16db95aed4842e8301e2e3f7fad72808de

Aliases

arxiv: astro-ph/0207549 · arxiv_version: astro-ph/0207549v1 · doi: 10.48550/arxiv.astro-ph/0207549 · pith_short_12: 7HB454MUIFJY · pith_short_16: 7HB454MUIFJYKIDW · pith_short_8: 7HB454MU

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/7HB454MUIFJYKIDWHJLX3HKNC3 \
  | 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: f9c3cef19441538520763a577d9d4d16db95aed4842e8301e2e3f7fad72808de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "099d44ceb2d7e8ee777d8d5bcc510a74b4f4d25f0244fdd6dee2a7cb01854aac",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-07-25T13:23:07Z",
    "title_canon_sha256": "6e5d5adb4f5be5171e6234ad0f2bdee34f65a4d71947ddfa953ede87dd90601a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0207549",
    "kind": "arxiv",
    "version": 1
  }
}