Pith Number

pith:FF6TUTXW

pith:2013:FF6TUTXW343DJSR63QMKZ43CEN

not attested not anchored not stored refs pending

The HST eXtreme Deep Field XDF: Combining all ACS and WFC3/IR Data on the HUDF Region into the Deepest Field Ever

C. M. Carollo (ETH), D. Magee (UCSC), G. D. Illingworth (UCSC), I. Labbe (Leiden), M. Franx (Leiden), M. Stiavelli (STScI), M. Trenti (Cambridge), P. A. Oesch (UCSC), P. G. van Dokkum (Yale), R. J. Bouwens (Leiden), V. Gonzalez (UCR)

arxiv:1305.1931 v2 · 2013-05-08 · 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{FF6TUTXW343DJSR63QMKZ43CEN}

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	2026-05-18T01:50:04.542636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

297d3a4ef6df3634ca3edc18acf3622350d5f4803df47bcb17ab05b7ccf140a0

Aliases

arxiv: 1305.1931 · arxiv_version: 1305.1931v2 · doi: 10.48550/arxiv.1305.1931 · pith_short_12: FF6TUTXW343D · pith_short_16: FF6TUTXW343DJSR6 · pith_short_8: FF6TUTXW

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/FF6TUTXW343DJSR63QMKZ43CEN \
  | 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: 297d3a4ef6df3634ca3edc18acf3622350d5f4803df47bcb17ab05b7ccf140a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19c0fe25276482accafb1ca53b8f9d0e54b603afe55a94d981b24e0351d56bab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-05-08T20:00:02Z",
    "title_canon_sha256": "ea08b37e078ca61af41a9e957d7427a0046f14b7356948ab2064cbbe0ae23472"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.1931",
    "kind": "arxiv",
    "version": 2
  }
}