Pith Number

pith:YYPAIC4V

pith:2019:YYPAIC4VPRI5LXOZUCFROGQVHI

not attested not anchored not stored refs pending

A Low-Flux State in IRAS 00521-7054 seen with NuSTAR and XMM-Newton: Relativistic Reflection and an Ultrafast Outflow

A. C. Fabian, C. Ricci, D. J. Walton, D. Stern, E. Nardini, F. A. Harrison, G. Risaliti, J. A. Garcia, L. C. Gallo, M. T. Reynolds, T. Dauser

arxiv:1901.05016 v1 · 2019-01-15 · 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{YYPAIC4VPRI5LXOZUCFROGQVHI}

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	2026-05-17T23:55:52.663915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c61e040b957c51d5ddd9a08b171a153a23dc4faf81961129da7ec715ddc4de14

Aliases

arxiv: 1901.05016 · arxiv_version: 1901.05016v1 · doi: 10.48550/arxiv.1901.05016 · pith_short_12: YYPAIC4VPRI5 · pith_short_16: YYPAIC4VPRI5LXOZ · pith_short_8: YYPAIC4V

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/YYPAIC4VPRI5LXOZUCFROGQVHI \
  | 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: c61e040b957c51d5ddd9a08b171a153a23dc4faf81961129da7ec715ddc4de14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "919a5266f57456acbfa98bbc40234cbdece3a1119ad20b78007e82c9df458a80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-01-15T19:00:09Z",
    "title_canon_sha256": "5085cb5a6ef930b6df130a21487858b882d52a3e4a7dee00ab6f4902200ee873"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.05016",
    "kind": "arxiv",
    "version": 1
  }
}