Pith Number

pith:ETMQNMAM

pith:2026:ETMQNMAMHJQTQEHCBOPR7ARYGN

not attested not anchored not stored refs pending

Does IRS13 require an intermediate-mass black hole?

Andreas Eckart, Bhavana Bhat, Florian Pei{\ss}ker, V\'aclav Pavl\'ik, Vladim\'ir Karas

arxiv:2608.10117 v1 · 2026-08-10 · 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{ETMQNMAMHJQTQEHCBOPR7ARYGN}

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	2026-08-12T00:22:51.163344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24d906b00c3a613810e20b9f1f82383346463130cfedbaa772776bdb060c3e39

Aliases

arxiv: 2608.10117 · arxiv_version: 2608.10117v1 · doi: 10.48550/arxiv.2608.10117 · pith_short_12: ETMQNMAMHJQT · pith_short_16: ETMQNMAMHJQTQEHC · pith_short_8: ETMQNMAM

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/ETMQNMAMHJQTQEHCBOPR7ARYGN \
  | 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: 24d906b00c3a613810e20b9f1f82383346463130cfedbaa772776bdb060c3e39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85bc1ff75586cae33a439e40e46d3cf1157262c70996cee6265c1edbf2b126ef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-08-10T18:34:29Z",
    "title_canon_sha256": "971b27b197bfffdfab7da219491cea9fa323ff968574b2107423e73681406dae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.10117",
    "kind": "arxiv",
    "version": 1
  }
}