Pith Number

pith:OTL2JFVK

pith:2022:OTL2JFVKQFLN4SJMTOHCVZVLUY

not attested not anchored not stored refs pending

New Constraints on the Spin of the Black Hole Cygnus X-1 and the Physical Properties of its Accretion Disk Corona

Albert Einstein Institute, Banafsheh Beheshtipour (Max Planck Institute for Gravitational Physics, Henric Krawczynski (Washington University in St. Louis), Leibniz Universit\"at Hannover)

arxiv:2201.07360 v3 · 2022-01-18 · astro-ph.HE · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OTL2JFVKQFLN4SJMTOHCVZVLUY}

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	2026-07-05T04:43:38.650635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74d7a496aa8156de492c9b8e2ae6aba615f44033e4715b6a7230ff27b8f6a536

Aliases

arxiv: 2201.07360 · arxiv_version: 2201.07360v3 · doi: 10.48550/arxiv.2201.07360 · pith_short_12: OTL2JFVKQFLN · pith_short_16: OTL2JFVKQFLN4SJM · pith_short_8: OTL2JFVK

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/OTL2JFVKQFLN4SJMTOHCVZVLUY \
  | 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: 74d7a496aa8156de492c9b8e2ae6aba615f44033e4715b6a7230ff27b8f6a536

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a4b75e741a20805650534e3c497e82aa9be42c8f5d86c1f69b85e9770f33db3",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-01-18T23:52:58Z",
    "title_canon_sha256": "7ba6570e83f4899892dd551cb15af36bee9a74c50a7cf421f461a52f8b8b2a05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.07360",
    "kind": "arxiv",
    "version": 3
  }
}