Pith Number

pith:JW7AAU7G

pith:2011:JW7AAU7GRJCO5TQCLM4EFOLS6F

not attested not anchored not stored refs pending

Unlocking the nature of ultraluminous X-ray sources using their X-ray spectra

Chris Done, Jeanette C. Gladstone, Timothy P. Roberts

arxiv:1101.4859 v1 · 2011-01-25 · 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{JW7AAU7GRJCO5TQCLM4EFOLS6F}

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	2026-05-18T02:03:22.396665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4dbe0053e68a44eece025b3842b972f15f706fd7297ed66f66c5e0d7cb0caffa

Aliases

arxiv: 1101.4859 · arxiv_version: 1101.4859v1 · doi: 10.48550/arxiv.1101.4859 · pith_short_12: JW7AAU7GRJCO · pith_short_16: JW7AAU7GRJCO5TQC · pith_short_8: JW7AAU7G

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/JW7AAU7GRJCO5TQCLM4EFOLS6F \
  | 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: 4dbe0053e68a44eece025b3842b972f15f706fd7297ed66f66c5e0d7cb0caffa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d337921b47b42e57971a96e33a7c4b52ff21ac4aee21f95c37b2de68ca32a4c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-01-25T16:03:25Z",
    "title_canon_sha256": "831dcad189109bc78b9395ff278ed34cd5ed461caea5e438fb0bf1c342023add"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.4859",
    "kind": "arxiv",
    "version": 1
  }
}