Pith Number

pith:FDSJQDMB

pith:2015:FDSJQDMBAFK7UHZS7EXS552TAE

not attested not anchored not stored refs pending

IC 3599 did it again: A second outburst of the X-ray transient Seyfert 1.9 Galaxy

Dirk Grupe (Morehead State University), Richard Saxton (ESAC), S. Komossa (MPIfR)

arxiv:1504.01389 v1 · 2015-04-06 · 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{FDSJQDMBAFK7UHZS7EXS552TAE}

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	2026-05-18T01:40:49.184500Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28e4980d810155fa1f32f92f2ef7530135b71693250a1d7b5a6fbc670f658805

Aliases

arxiv: 1504.01389 · arxiv_version: 1504.01389v1 · doi: 10.48550/arxiv.1504.01389 · pith_short_12: FDSJQDMBAFK7 · pith_short_16: FDSJQDMBAFK7UHZS · pith_short_8: FDSJQDMB

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/FDSJQDMBAFK7UHZS7EXS552TAE \
  | 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: 28e4980d810155fa1f32f92f2ef7530135b71693250a1d7b5a6fbc670f658805

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c74459511e2ed9510c50757cbb6714d0216c1ce1359d865f06c2a31b10aed0d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-04-06T20:00:40Z",
    "title_canon_sha256": "fd0693febb2c700ae1ae115b82a21ec84d45e3e53c06121d00dcf45c33684723"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01389",
    "kind": "arxiv",
    "version": 1
  }
}