Pith Number

pith:Y42VDCVM

pith:2011:Y42VDCVMKEOXOOYNMLENGKSPNW

not attested not anchored not stored refs pending

The Tumultuous Formation of the Hubble Sequence at z > 1 Examined with HST/WFC3 Observations of the Hubble Ultra Deep Field

A.F.L. Bluck, A. Koekemoer, A. Mortlock, C. J. Conselice, F. Buitrago, R. Gr\"utzbauch, S. Penny, S. Ravindranath

arxiv:1105.2522 v1 · 2011-05-12 · 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{Y42VDCVMKEOXOOYNMLENGKSPNW}

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	2026-05-18T02:01:59.035468Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c735518aac511d773b0d62c8d32a4f6d848fd681e28ba6fe02c3684e784cf2c0

Aliases

arxiv: 1105.2522 · arxiv_version: 1105.2522v1 · doi: 10.48550/arxiv.1105.2522 · pith_short_12: Y42VDCVMKEOX · pith_short_16: Y42VDCVMKEOXOOYN · pith_short_8: Y42VDCVM

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/Y42VDCVMKEOXOOYNMLENGKSPNW \
  | 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: c735518aac511d773b0d62c8d32a4f6d848fd681e28ba6fe02c3684e784cf2c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3d427ed00b0b5f8dd115e0d4e7d17eac967927be0ca3ea8e2ce6f3c52ab8e3c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-05-12T16:26:16Z",
    "title_canon_sha256": "c4f979aa002f4a9171e707cd0c29a6fbe493dfc9ee397f83226630dc877e1ec8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.2522",
    "kind": "arxiv",
    "version": 1
  }
}