Pith Number

pith:B7EL57F2

pith:2002:B7EL57F2POUPCGPYYYZGKEG2DG

not attested not anchored not stored refs pending

Crystalline silicate dust around evolved stars I. The sample stars

2, (2) Georgia Institute of Technology, 3), (3) Katholieke Universiteit Leuven, (4) SRON, (5) University College London, 6), (6) presently at ESTEC/ESA, A.G.G.M. Tielens (4), F.J. Molster (1, Groningen, L.B.F.M. Waters (1, M.J. Barlow (5) ((1) University of Amsterdam, Noordwijk, the Netherlands)

arxiv:astro-ph/0201303 v1 · 2002-01-18 · 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{B7EL57F2POUPCGPYYYZGKEG2DG}

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	2026-07-04T16:29:16.622524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fc8befcba7ba8f119f8c6326510da19b1b2ac5361d0e524c8de38b9fe773dbd

Aliases

arxiv: astro-ph/0201303 · arxiv_version: astro-ph/0201303v1 · doi: 10.48550/arxiv.astro-ph/0201303 · pith_short_12: B7EL57F2POUP · pith_short_16: B7EL57F2POUPCGPY · pith_short_8: B7EL57F2

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/B7EL57F2POUPCGPYYYZGKEG2DG \
  | 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: 0fc8befcba7ba8f119f8c6326510da19b1b2ac5361d0e524c8de38b9fe773dbd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4c2510f9e2b4336f3edebe8108f9d34473582201aea0d545cccb4a397833cb7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-01-18T12:27:53Z",
    "title_canon_sha256": "7f306e59a2e0566ae0904cec85d34ad234c00c191506b8bf36df6036a88a002f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0201303",
    "kind": "arxiv",
    "version": 1
  }
}