Pith Number

pith:M4D6DBVJ

pith:2018:M4D6DBVJW7FY73IMU4PNBFT7QJ

not attested not anchored not stored refs pending

The Progenitor Age and Mass of the Black-Hole-Formation Candidate N6946-BH1

(2) Astronomy, (3) Raytheon Company), Andrew E. Dolphin (3), Benjamin Williams (2), Florida State University, Jeremiah W. Murphy (1), Julianne Dalcanton (2), Mariangelly D\'iaz-Rodr\'iguez (1) ((1) Physics, Rubab Khan (2), University of Washington

arxiv:1803.00024 v2 · 2018-02-28 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M4D6DBVJW7FY73IMU4PNBFT7QJ}

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	2026-05-18T00:05:56.333754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6707e186a9b7cb8fed0ca71ed0967f827750ac29b3729ad3c6c3adc3a0a1c1b2

Aliases

arxiv: 1803.00024 · arxiv_version: 1803.00024v2 · doi: 10.48550/arxiv.1803.00024 · pith_short_12: M4D6DBVJW7FY · pith_short_16: M4D6DBVJW7FY73IM · pith_short_8: M4D6DBVJ

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/M4D6DBVJW7FY73IMU4PNBFT7QJ \
  | 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: 6707e186a9b7cb8fed0ca71ed0967f827750ac29b3729ad3c6c3adc3a0a1c1b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a0eaf216e5e66ffcb4d4ae9d95744ede352a2215188239fb065993499f20c30",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-02-28T19:00:52Z",
    "title_canon_sha256": "aebc217741df638fef7381fb2e894ca2c0019249b7c088667de49bf23a9a92e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.00024",
    "kind": "arxiv",
    "version": 2
  }
}