Pith Number

pith:HTTCT3DI

pith:2021:HTTCT3DIQG36PKZN5ONBCA3R5K

not attested not anchored not stored refs pending

Relics of Supermassive Black Hole Seeds: The Discovery of an Accreting Black Hole in an Optically Normal, Low Metallicity Dwarf Galaxy

Anil Seth, Barry Rothberg, Gabriela Canalizo, Henrique Schmitt, Jenna M. Cann, Lara Kamal, Laura Blecha, Nathan J. Secrest, Remington O. Sexton, Shobita Satyapal, Stephanie LaMassa, Thomas Bohn, Torsten B\"oker, William Matzko

arxiv:2104.05689 v1 · 2021-04-12 · 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{HTTCT3DIQG36PKZN5ONBCA3R5K}

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	2026-07-05T02:37:12.144224Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ce629ec6881b7e7ab2deb9a110371eab743ba0299c26bf4f1137b221d40b8c2

Aliases

arxiv: 2104.05689 · arxiv_version: 2104.05689v1 · doi: 10.48550/arxiv.2104.05689 · pith_short_12: HTTCT3DIQG36 · pith_short_16: HTTCT3DIQG36PKZN · pith_short_8: HTTCT3DI

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/HTTCT3DIQG36PKZN5ONBCA3R5K \
  | 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: 3ce629ec6881b7e7ab2deb9a110371eab743ba0299c26bf4f1137b221d40b8c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bb8cd1c67d564085c6a4c074adb0e65209a98800e82f964748a60084945edac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-04-12T17:50:57Z",
    "title_canon_sha256": "95e2de612bc297a53a80bc7749921a336997c0b4241d1f384f8c90e72d5b18d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.05689",
    "kind": "arxiv",
    "version": 1
  }
}