Pith Number

pith:HLLMDYQW

pith:2005:HLLMDYQWG2WW6TYSQN35D5OQR6

not attested not anchored not stored refs pending

A deep XMM-Newton observation of the ultraluminous X-ray source HoII X-1 : the case against a 1000 solar mass black hole

(2) NASA Goddard Space Flight Center, 3), (3) John Hopkins University), J.N. Reeves (2, M.R. Goad (1), P.Uttley (2) ((1) University of Leicester, T.P. Roberts (1)

arxiv:astro-ph/0510185 v1 · 2005-10-06 · 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{HLLMDYQWG2WW6TYSQN35D5OQR6}

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	2026-05-18T01:40:33.288505Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ad6c1e21636ad6f4f128377d1f5d08fbc48f722276defb24c5a6cd16096faa1

Aliases

arxiv: astro-ph/0510185 · arxiv_version: astro-ph/0510185v1 · doi: 10.48550/arxiv.astro-ph/0510185 · pith_short_12: HLLMDYQWG2WW · pith_short_16: HLLMDYQWG2WW6TYS · pith_short_8: HLLMDYQW

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/HLLMDYQWG2WW6TYSQN35D5OQR6 \
  | 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: 3ad6c1e21636ad6f4f128377d1f5d08fbc48f722276defb24c5a6cd16096faa1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa1f609faa3579b5787757e23041d776e1f4052d824259c7012d002407db26bd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-10-06T16:39:09Z",
    "title_canon_sha256": "872681e963cfccd0f06b5ea02537e6f2611facb5a0461618adc1b11d2017ce7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0510185",
    "kind": "arxiv",
    "version": 1
  }
}