Pith Number

pith:YQ6KY65J

pith:2016:YQ6KY65JD5HFTYOB4V4IRETUJK

not attested not anchored not stored refs pending

Long-term X-Ray Spectral Variability in AGN from the Palomar sample observed by Swift

C. J. Skipper, D. Emmanoulopoulos, I.M. McHardy, S. D. Connolly

arxiv:1604.03556 v1 · 2016-04-12 · 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{YQ6KY65JD5HFTYOB4V4IRETUJK}

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	2026-05-18T01:16:12.850108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c43cac7ba91f4e59e1c1e5788892744a8f449e0344ea044e2bbed59409f1fce5

Aliases

arxiv: 1604.03556 · arxiv_version: 1604.03556v1 · doi: 10.48550/arxiv.1604.03556 · pith_short_12: YQ6KY65JD5HF · pith_short_16: YQ6KY65JD5HFTYOB · pith_short_8: YQ6KY65J

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/YQ6KY65JD5HFTYOB4V4IRETUJK \
  | 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: c43cac7ba91f4e59e1c1e5788892744a8f449e0344ea044e2bbed59409f1fce5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bbfb289f747092ec706112cc5185e386ef3c25d7121b6d7b5fb18afbe9409d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-04-12T20:00:06Z",
    "title_canon_sha256": "f847dd6e02449a603806a37c60ddbacf94ee722c93cc30c455264b93a20ca5bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.03556",
    "kind": "arxiv",
    "version": 1
  }
}