Pith Number

pith:KGO7MKV3

pith:2008:KGO7MKV34L2HY2WXK23T737HTU

not attested not anchored not stored refs pending

The Megamaser Cosmology Project: I. VLBI observations of UGC 3789

C. Henkel, J. A. Braatz, J. J. Condon, K. Y. Lo, L. J. Greenhill, M. J. Reid

arxiv:0811.4345 v1 · 2008-11-26 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KGO7MKV34L2HY2WXK23T737HTU}

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	2026-05-18T04:29:24.859321Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

519df62abbe2f47c6ad756b73fefe79d285a2ab22820c5a6169c9c3b0f1e53b7

Aliases

arxiv: 0811.4345 · arxiv_version: 0811.4345v1 · doi: 10.48550/arxiv.0811.4345 · pith_short_12: KGO7MKV34L2H · pith_short_16: KGO7MKV34L2HY2WX · pith_short_8: KGO7MKV3

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/KGO7MKV34L2HY2WXK23T737HTU \
  | 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: 519df62abbe2f47c6ad756b73fefe79d285a2ab22820c5a6169c9c3b0f1e53b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ffb514a038bb2964d12ff1a5e4ababa433fb770af6b73ad06f321c65c3c32e1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-11-26T15:30:15Z",
    "title_canon_sha256": "e55d110587a2addc12dd649a40e96635e9c06fe32c9b675918278b0d62dd0e8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.4345",
    "kind": "arxiv",
    "version": 1
  }
}