Pith Number

pith:53IX2H6K

pith:2018:53IX2H6KPIUITTNYDASTYO3FPZ

not attested not anchored not stored refs pending

The missing light of the Hubble Ultra Deep Field

Alejandro Borlaff, Alejandro Lumbreras, Antonio Dorta, Carlos G\'omez-Guijarro, Cristina Mart\'inez-Lombilla, Ignacio Trujillo, Javier Rom\'an, John E. Beckman, Mar\'ia Cebri\'an, M. Carmen Eliche-Moral, Mohammad Akhlaghi, Nicol\'as Cardiel, Ra\'ul Infante-S\'ainz, Rodrigo Takuro Sato Mart\'in de Almagro

arxiv:1810.00002 v2 · 2018-09-28 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{53IX2H6KPIUITTNYDASTYO3FPZ}

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	2026-05-17T23:54:53.703912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eed17d1fca7a2889cdb818253c3b657e7496c107f5a5095606bf41ea2cc9f91e

Aliases

arxiv: 1810.00002 · arxiv_version: 1810.00002v2 · doi: 10.48550/arxiv.1810.00002 · pith_short_12: 53IX2H6KPIUI · pith_short_16: 53IX2H6KPIUITTNY · pith_short_8: 53IX2H6K

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/53IX2H6KPIUITTNYDASTYO3FPZ \
  | 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: eed17d1fca7a2889cdb818253c3b657e7496c107f5a5095606bf41ea2cc9f91e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68e72de547411da17030dacc1702323e462ae09bc0c62342cd970954da4cff04",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-09-28T18:00:00Z",
    "title_canon_sha256": "1468f01e17ebac2a5d96e56af711c254bedfc6647c33280f81bbe4c784319c83"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.00002",
    "kind": "arxiv",
    "version": 2
  }
}