Pith Number

pith:Y66VHKMB

pith:2010:Y66VHKMBEDQP2IAHMWQ5N6JST3

not attested not anchored not stored refs pending

Challenging times: a re-analysis of NGC 5408 X-1

C. Done, F.E. Jackson, M.J. Middleton, T.P. Roberts

arxiv:1009.2686 v1 · 2010-09-14 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y66VHKMBEDQP2IAHMWQ5N6JST3}

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	2026-05-18T02:05:30.617617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7bd53a98120e0fd200765a1d6f9329ee3eee4672c5da10c62455f925a0a37e3

Aliases

arxiv: 1009.2686 · arxiv_version: 1009.2686v1 · doi: 10.48550/arxiv.1009.2686 · pith_short_12: Y66VHKMBEDQP · pith_short_16: Y66VHKMBEDQP2IAH · pith_short_8: Y66VHKMB

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/Y66VHKMBEDQP2IAHMWQ5N6JST3 \
  | 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: c7bd53a98120e0fd200765a1d6f9329ee3eee4672c5da10c62455f925a0a37e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99ad7cabffa0536c1377a54f1c446f478d1b869140d9ccd1b325e0229c6a0a1d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-14T14:59:04Z",
    "title_canon_sha256": "31ff830319d53d4ec6c21efd4fc645dbca61329ab354308419d3518e32652478"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.2686",
    "kind": "arxiv",
    "version": 1
  }
}