Pith Number

pith:32PKBDJM

pith:2010:32PKBDJMVRA2ADCCQZNHET67ZK

not attested not anchored not stored refs pending

(No) dynamical constraints on the mass of the black hole in two ULXs

(2) University of Alberta, (3) University of Leicester, (4) University of Warwick), A. D. Goulding (1), A. J. Levan (4) ((1) Durham University, A. M. Swinbank (1), J. C. Gladstone (2), M. J. Ward (1), M. R. Goad (3), T. P. Roberts (1)

arxiv:1011.2155 v1 · 2010-11-09 · astro-ph.HE · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{32PKBDJMVRA2ADCCQZNHET67ZK}

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	2026-05-18T02:04:49.701611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de9ea08d2cac41a00c42865a724fdfcabb70f3c2b64dab62461b1d64bc26f24f

Aliases

arxiv: 1011.2155 · arxiv_version: 1011.2155v1 · doi: 10.48550/arxiv.1011.2155 · pith_short_12: 32PKBDJMVRA2 · pith_short_16: 32PKBDJMVRA2ADCC · pith_short_8: 32PKBDJM

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/32PKBDJMVRA2ADCCQZNHET67ZK \
  | 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: de9ea08d2cac41a00c42865a724fdfcabb70f3c2b64dab62461b1d64bc26f24f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a082e0a837608c43d8c9b872350ba437c8866744bb489a0b110a8acb139064c7",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-11-09T17:28:09Z",
    "title_canon_sha256": "1a8a36e7c20a386934ae823c6688c929fe7331523ad3c3ab8c6620a6576bbac6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.2155",
    "kind": "arxiv",
    "version": 1
  }
}