Pith Number

pith:IHVHG5E2

pith:2019:IHVHG5E2GEAXUYURBOMHKLQBOP

not attested not anchored not stored refs pending

Not so fast: LB-1 is unlikely to contain a 70 $M_{\odot}$ black hole

Eliot Quataert, Kareem El-Badry

arxiv:1912.04185 v2 · 2019-12-09 · 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{IHVHG5E2GEAXUYURBOMHKLQBOP}

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	2026-07-05T00:33:24.143384Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41ea73749a31017a62910b98752e0173cc2a9c5d47b72e8eed8e560c69673f27

Aliases

arxiv: 1912.04185 · arxiv_version: 1912.04185v2 · doi: 10.48550/arxiv.1912.04185 · pith_short_12: IHVHG5E2GEAX · pith_short_16: IHVHG5E2GEAXUYUR · pith_short_8: IHVHG5E2

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/IHVHG5E2GEAXUYURBOMHKLQBOP \
  | 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: 41ea73749a31017a62910b98752e0173cc2a9c5d47b72e8eed8e560c69673f27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad9613eb9e23b4298302ba9204ff894f421d55f2026596e233def578c4c3d279",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-12-09T17:05:08Z",
    "title_canon_sha256": "238b288f86ae6252c617272947c36b7919918f3e1c5dc80692f9621258423da1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.04185",
    "kind": "arxiv",
    "version": 2
  }
}