Pith Number

pith:SXQ4H27Q

pith:2009:SXQ4H27QBEAHY3VW4WOCP44EMF

not attested not anchored not stored refs pending

z~7 Galaxies in the HUDF: First Epoch WFC3/IR Results

C. M. Carollo, D. Magee, G. D. Illingworth, I. Labbe, M. Franx, M. Stiavelli, M. Trenti, P. A. Oesch, P. G. van Dokkum, R. J. Bouwens

arxiv:0909.1806 v2 · 2009-09-10 · 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{SXQ4H27QBEAHY3VW4WOCP44EMF}

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	2026-05-18T02:11:57.844596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95e1c3ebf009007c6eb6e59c27f38461663eb747404e9d8473e1b4e1ff3353f6

Aliases

arxiv: 0909.1806 · arxiv_version: 0909.1806v2 · doi: 10.48550/arxiv.0909.1806 · pith_short_12: SXQ4H27QBEAH · pith_short_16: SXQ4H27QBEAHY3VW · pith_short_8: SXQ4H27Q

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/SXQ4H27QBEAHY3VW4WOCP44EMF \
  | 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: 95e1c3ebf009007c6eb6e59c27f38461663eb747404e9d8473e1b4e1ff3353f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b10bf677e4e6df70870b3c16ac2e17941f3a63f6a4e9b4a3e1a655754fe9616",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-10T19:39:25Z",
    "title_canon_sha256": "45b4abb7498df1972b50fe39c11430f1796c2a7943c6ad02ed16d12c3b40562c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1806",
    "kind": "arxiv",
    "version": 2
  }
}