Pith Number

pith:DSG4L2O4

pith:2004:DSG4L2O4JHEXX4IMERS2Q2A3ML

not attested not anchored not stored refs pending

XMM-Newton observation of 4U 1543-475: the X-ray spectrum of a stellar-mass black-hole at low luminosity

Milano (I)), Nicola La Palombara, Sandro Mereghetti (IASF/CNR

arxiv:astro-ph/0412209 v1 · 2004-12-09 · 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{DSG4L2O4JHEXX4IMERS2Q2A3ML}

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	2026-07-04T16:45:22.826729Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c8dc5e9dc49c97bf10c2465a8681b62f3f5c8157ddb8b59e43d7049001fa3c9

Aliases

arxiv: astro-ph/0412209 · arxiv_version: astro-ph/0412209v1 · doi: 10.48550/arxiv.astro-ph/0412209 · pith_short_12: DSG4L2O4JHEX · pith_short_16: DSG4L2O4JHEXX4IM · pith_short_8: DSG4L2O4

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/DSG4L2O4JHEXX4IMERS2Q2A3ML \
  | 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: 1c8dc5e9dc49c97bf10c2465a8681b62f3f5c8157ddb8b59e43d7049001fa3c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be1f29d2a93174188dd67b6a4c1ed85ca94979d47e535f35b32690d9805be901",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-12-09T13:40:25Z",
    "title_canon_sha256": "c858a28949e2f103c03537d238b7202c76a52a368bf4d844b05f6274e0e4f47a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0412209",
    "kind": "arxiv",
    "version": 1
  }
}