Pith Number

pith:K552RO4Y

pith:2020:K552RO4Y7UIAQ3AI6QNLS654RO

not attested not anchored not stored refs pending

Reflection features in the X-ray spectrum of Fairall 9 and implications for tests of general relativity

Askar B. Abdikamalov, Cosimo Bambi, Dimitry Ayzenberg, Haiyang Wang, Honghui Liu

arxiv:2004.11542 v1 · 2020-04-24 · gr-qc · 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{K552RO4Y7UIAQ3AI6QNLS654RO}

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	2026-07-05T01:13:10.726325Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

577ba8bb98fd10086c08f41ab97bbc8ba5e2f7f96ea4d34d3cfb3ce8a29d94a6

Aliases

arxiv: 2004.11542 · arxiv_version: 2004.11542v1 · doi: 10.48550/arxiv.2004.11542 · pith_short_12: K552RO4Y7UIA · pith_short_16: K552RO4Y7UIAQ3AI · pith_short_8: K552RO4Y

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/K552RO4Y7UIAQ3AI6QNLS654RO \
  | 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: 577ba8bb98fd10086c08f41ab97bbc8ba5e2f7f96ea4d34d3cfb3ce8a29d94a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dbfcf7b1d2e7612b6bef1edb155d65350b0808772da50047742bc67f4783197c",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-04-24T05:50:43Z",
    "title_canon_sha256": "497fe0e4c1eb82828f75644b4fa024a2d3e3ecbc600f54eebcb7fa976d45402e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.11542",
    "kind": "arxiv",
    "version": 1
  }
}