Pith Number

pith:2VKRQ6HH

pith:2016:2VKRQ6HHTRGML2AJLFNNS6LTCJ

not attested not anchored not stored refs pending

Shedding light on the black hole mass spectrum

Mario Spera, Michela Mapelli, Nicola Giacobbo

arxiv:1606.03349 v1 · 2016-06-10 · 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{2VKRQ6HHTRGML2AJLFNNS6LTCJ}

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	2026-05-18T01:12:37.078991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5551878e79c4cc5e809595ad97973124940183d8d55b0e5f8f9ed37cac91b3d

Aliases

arxiv: 1606.03349 · arxiv_version: 1606.03349v1 · doi: 10.48550/arxiv.1606.03349 · pith_short_12: 2VKRQ6HHTRGM · pith_short_16: 2VKRQ6HHTRGML2AJ · pith_short_8: 2VKRQ6HH

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/2VKRQ6HHTRGML2AJLFNNS6LTCJ \
  | 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: d5551878e79c4cc5e809595ad97973124940183d8d55b0e5f8f9ed37cac91b3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c711849ba06101d1461127288f8417c9c56d4cfed737b459bf534511046fa192",
    "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": "2016-06-10T14:44:28Z",
    "title_canon_sha256": "fa90697ecb9540e36581eac45697b208169b42100148d522f359db45ec95510b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.03349",
    "kind": "arxiv",
    "version": 1
  }
}