Pith Number

pith:PCQOSKN2

pith:2015:PCQOSKN2FS77CBNYYTIDSOY75A

not attested not anchored not stored refs pending

X-ray Reflection Spectroscopy of the Black Hole GX 339-4: Exploring the Hard State with Unprecedented Sensitivity

James F. Steiner, Javier A. Garcia, Jeffrey E. McClintock, Ronald A. Remillard, Thomas Dauser, Victoria Grinberg

arxiv:1505.03607 v2 · 2015-05-14 · 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{PCQOSKN2FS77CBNYYTIDSOY75A}

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	2026-05-18T01:28:05.071541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78a0e929ba2cbff105b8c4d0393b1fe83bb311f839350f92048ac868ce28d4a3

Aliases

arxiv: 1505.03607 · arxiv_version: 1505.03607v2 · doi: 10.48550/arxiv.1505.03607 · pith_short_12: PCQOSKN2FS77 · pith_short_16: PCQOSKN2FS77CBNY · pith_short_8: PCQOSKN2

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/PCQOSKN2FS77CBNYYTIDSOY75A \
  | 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: 78a0e929ba2cbff105b8c4d0393b1fe83bb311f839350f92048ac868ce28d4a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "befebfe2ac86703ce2643c7c5df40f2993446b06b963da94aae0250edc51d74e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-05-14T03:32:16Z",
    "title_canon_sha256": "8018af1c99a5566a19fa1035b177dd106d3790d1587a6bf26e4fad121359511d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.03607",
    "kind": "arxiv",
    "version": 2
  }
}