Pith Number

pith:M3WK4BPC

pith:2010:M3WK4BPC66S3XG4GBZOWC2WBPR

not attested not anchored not stored refs pending

Ultraluminous X-ray Sources forming in low metallicity natal environments

A. Patruno, L. Zampieri, M. Colpi, M. Mapelli, T. P. Roberts

arxiv:1003.3643 v1 · 2010-03-18 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M3WK4BPC66S3XG4GBZOWC2WBPR}

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	2026-05-18T02:08:25.885745Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66ecae05e2f7a5bb9b860e5d616ac17c7b41e10c36daa5e553d7525abd0c50b4

Aliases

arxiv: 1003.3643 · arxiv_version: 1003.3643v1 · doi: 10.48550/arxiv.1003.3643 · pith_short_12: M3WK4BPC66S3 · pith_short_16: M3WK4BPC66S3XG4G · pith_short_8: M3WK4BPC

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/M3WK4BPC66S3XG4GBZOWC2WBPR \
  | 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: 66ecae05e2f7a5bb9b860e5d616ac17c7b41e10c36daa5e553d7525abd0c50b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33c782d2549ae7e30daca85ec0fff7683697a267b079cae113c045d20f3ff81d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-03-18T18:03:34Z",
    "title_canon_sha256": "8e59fc4321e91a757c9780d186fe6a6b05da36dbeff533039a6fcf6c55655e57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.3643",
    "kind": "arxiv",
    "version": 1
  }
}