Pith Number

pith:MI7DKL54

pith:2021:MI7DKL545JCLSOJZONWHKHNWWZ

not attested not anchored not stored refs pending

Testing the presence of a dormant black hole inside HR 6819

A. Hypki, A. Olejak, A. Romagnolo, G. Wiktorowicz, K. Belczynski

arxiv:2107.08930 v5 · 2021-07-19 · astro-ph.SR · astro-ph.GA · 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{MI7DKL545JCLSOJZONWHKHNWWZ}

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	2026-07-05T05:14:08.624156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

623e352fbcea44b93939736c751db6b6431755a8abb1e73acf77782b9b62c9df

Aliases

arxiv: 2107.08930 · arxiv_version: 2107.08930v5 · doi: 10.48550/arxiv.2107.08930 · pith_short_12: MI7DKL545JCL · pith_short_16: MI7DKL545JCLSOJZ · pith_short_8: MI7DKL54

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/MI7DKL545JCLSOJZONWHKHNWWZ \
  | 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: 623e352fbcea44b93939736c751db6b6431755a8abb1e73acf77782b9b62c9df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "464e5c806111987200128609354bb32d64911a084f54405c2ab41c5fac901f37",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-07-19T14:41:32Z",
    "title_canon_sha256": "db228819f9b345a3793fde62373d93030db0ca0e3483f47798d6f515b7b649e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.08930",
    "kind": "arxiv",
    "version": 5
  }
}