Pith Number

pith:EFXZ5KOJ

pith:2025:EFXZ5KOJJ3PV756NEJZXANLFS2

not attested not anchored not stored refs pending

Reconstructing PTA measurements via early seeding of supermassive black holes

Cosmin Ilie, Sohan Ghodla

arxiv:2507.06163 v1 · 2025-07-08 · astro-ph.CO · 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{EFXZ5KOJJ3PV756NEJZXANLFS2}

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	2026-07-05T11:33:53.075699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

216f9ea9c94edf5ff7cd227370356596b80fe01d8de733a7ede63eabd933ae32

Aliases

arxiv: 2507.06163 · arxiv_version: 2507.06163v1 · doi: 10.48550/arxiv.2507.06163 · pith_short_12: EFXZ5KOJJ3PV · pith_short_16: EFXZ5KOJJ3PV756N · pith_short_8: EFXZ5KOJ

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/EFXZ5KOJJ3PV756NEJZXANLFS2 \
  | 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: 216f9ea9c94edf5ff7cd227370356596b80fe01d8de733a7ede63eabd933ae32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a883f069496fa8df585e96e720fc32bfd01ab67051ad6aa9ee8d2eb20f67a04c",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2025-07-08T16:45:48Z",
    "title_canon_sha256": "f90d6292d28ad01da2175bea0cc292c34a117b3b26cf0256e5e32d80e49b75ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.06163",
    "kind": "arxiv",
    "version": 1
  }
}