Pith Number

pith:D5YA2IXJ

pith:2012:D5YA2IXJXCXVDJPJQTPVAHXNYP

not attested not anchored not stored refs pending

The 2012 Hubble Ultra Deep Field (UDF12): Observational Overview

Alexander B. Rogers, Anton M. Koekemoer, Brant E Robertson, Daniel P. Stark, Emma Curtis-Lake, Evan Schneider, James S. Dunlop, Masami Ouchi, Matthew A. Schenker, Michele Cirasuolo, Rebecca A. A. Bowler, Richard S Ellis, Ross J. McLure, Stephane Charlot, Steven R. Furlanetto, T. Targett, V. Wild, Yoshiaki Ono

arxiv:1212.1448 v1 · 2012-12-06 · 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{D5YA2IXJXCXVDJPJQTPVAHXNYP}

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	2026-05-18T01:52:46.861294Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f700d22e9b8af51a5e984df501eedc3e8be35707057c6d3d6bcde8fa04ff432

Aliases

arxiv: 1212.1448 · arxiv_version: 1212.1448v1 · doi: 10.48550/arxiv.1212.1448 · pith_short_12: D5YA2IXJXCXV · pith_short_16: D5YA2IXJXCXVDJPJ · pith_short_8: D5YA2IXJ

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/D5YA2IXJXCXVDJPJQTPVAHXNYP \
  | 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: 1f700d22e9b8af51a5e984df501eedc3e8be35707057c6d3d6bcde8fa04ff432

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc202e62d8393bf7b7f12797927523aa1bf8377030ebf857fc91b042eb9f076d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-12-06T20:59:59Z",
    "title_canon_sha256": "5a4ce2789ea19e5661c8795267dd4ef25557f9aadd504b0bfc418708b7858336"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.1448",
    "kind": "arxiv",
    "version": 1
  }
}