Pith Number

pith:GHAFHDF7

pith:2009:GHAFHDF744V3VVU32PLUCN6UIV

not attested not anchored not stored refs pending

HST's hunt for intermediate-mass black holes in star clusters

(2) Johns Hopkins University, (3) University of Toledo, (4) Space Telescope Science Institute), Holland Ford (2) ((1) Carnegie DTM, Jay Anderson (4), Julio Chanam\'e (1), Justice Bruursema (2), Roeland van der Marel (4), Rupali Chandar (3)

arxiv:0911.1806 v2 · 2009-11-10 · 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{GHAFHDF744V3VVU32PLUCN6UIV}

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	2026-05-18T02:10:49.309733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31c0538cbfe72bbad69bd3d74137d44554200da63f6ca0f6a4e7c4f3dcc888e6

Aliases

arxiv: 0911.1806 · arxiv_version: 0911.1806v2 · doi: 10.48550/arxiv.0911.1806 · pith_short_12: GHAFHDF744V3 · pith_short_16: GHAFHDF744V3VVU3 · pith_short_8: GHAFHDF7

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/GHAFHDF744V3VVU32PLUCN6UIV \
  | 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: 31c0538cbfe72bbad69bd3d74137d44554200da63f6ca0f6a4e7c4f3dcc888e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70aefdfb2f2b4c25a9125466ef8e7871d66c1eea58d730250af2a6898bbda08b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-11-10T18:14:21Z",
    "title_canon_sha256": "dcdc49e5e251b404c2cab13375a71ef1e5f100d23778a09e1de3eb13b9c86394"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1806",
    "kind": "arxiv",
    "version": 2
  }
}