Pith Number

pith:NBPPJFJE

pith:2017:NBPPJFJE5ASKFS4H73CUEYYO7N

not attested not anchored not stored refs pending

Doughnut strikes sandwich: the geometry of hot medium in accreting black hole X-ray binaries

Alexandra Veledina, Andrzej A. Zdziarski, Juri Poutanen

arxiv:1711.08509 v2 · 2017-11-22 · 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{NBPPJFJE5ASKFS4H73CUEYYO7N}

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	2026-05-18T00:12:56.146725Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

685ef49524e824a2cb87fec542630efb502164c2b7d3072061b1c13c2fb7cac6

Aliases

arxiv: 1711.08509 · arxiv_version: 1711.08509v2 · doi: 10.48550/arxiv.1711.08509 · pith_short_12: NBPPJFJE5ASK · pith_short_16: NBPPJFJE5ASKFS4H · pith_short_8: NBPPJFJE

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/NBPPJFJE5ASKFS4H73CUEYYO7N \
  | 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: 685ef49524e824a2cb87fec542630efb502164c2b7d3072061b1c13c2fb7cac6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "855641bac316bad9549d959fa67743ddf83987cfc70c1311ce6c621086322b87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-11-22T21:24:03Z",
    "title_canon_sha256": "f69dd6ca01124965b13b71eb399e2c0b24e0b60544f6820bce58a4067580917e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.08509",
    "kind": "arxiv",
    "version": 2
  }
}