Pith Number

pith:YFPRBFJC

pith:2010:YFPRBFJCQE2H7CA3CP2ETNYKKI

not attested not anchored not stored refs pending

The Megamaser Cosmology Project. II. The Angular-Diameter Distance to UGC 3789

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

arxiv:1005.1955 v1 · 2010-05-11 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YFPRBFJCQE2H7CA3CP2ETNYKKI}

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	2026-05-18T02:07:33.934928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c15f10952281347f881b13f449b70a52173296993c1508eb29657fd7bfe1635a

Aliases

arxiv: 1005.1955 · arxiv_version: 1005.1955v1 · doi: 10.48550/arxiv.1005.1955 · pith_short_12: YFPRBFJCQE2H · pith_short_16: YFPRBFJCQE2H7CA3 · pith_short_8: YFPRBFJC

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/YFPRBFJCQE2H7CA3CP2ETNYKKI \
  | 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: c15f10952281347f881b13f449b70a52173296993c1508eb29657fd7bfe1635a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2eb5d3f725b0d5f4f066538ca61a4140236292aa2bc8719a018137b59f3cfa83",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-05-11T21:26:52Z",
    "title_canon_sha256": "48d9b25f3184be9e0e4c93e2a05f832b913598a89cf2729ffbcce5de84ef3211"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.1955",
    "kind": "arxiv",
    "version": 1
  }
}