Pith Number

pith:4N42SRCA

pith:2011:4N42SRCAFY5T756JCLEO7K3AA3

not attested not anchored not stored refs pending

Color and Stellar Population Gradients in Passively Evolving Galaxies at z~2 from HST/WFC3 Deep Imaging in the Hubble Ultra Deep Field

(2) STScI, (3) NOAO, (4) INAF - Osservatorio Astronomico di Padova, (5) Texas A&M University, (6) INAF - Osservatorio Astronomico di Trieste, (7) INAF - Osservatorio Astronomico di Roma), Adriano Fontana (7), Alvio Renzini (4), Anton Koekemoer (2), Casey Papovich (5), Elena Tundo (6), Henry C. Ferguson (2), Jennifer M. Lotz (2), Mark Dickinson (3), Mauro Giavalisco (1), Norman A. Grogin (2), Paolo Cassata (1), Sara Salimbeni (1) ((1) UMass, Yicheng Guo (1)

arxiv:1101.0843 v2 · 2011-01-04 · 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{4N42SRCAFY5T756JCLEO7K3AA3}

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	2026-05-18T02:04:13.087713Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e379a944402e3b3ff7c912c8efab6006e23a0d16528712402ed7399ed9ce5a66

Aliases

arxiv: 1101.0843 · arxiv_version: 1101.0843v2 · doi: 10.48550/arxiv.1101.0843 · pith_short_12: 4N42SRCAFY5T · pith_short_16: 4N42SRCAFY5T756J · pith_short_8: 4N42SRCA

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/4N42SRCAFY5T756JCLEO7K3AA3 \
  | 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: e379a944402e3b3ff7c912c8efab6006e23a0d16528712402ed7399ed9ce5a66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04963065a421dc35501eff778f5f7cbddb495aacc34be01a569e5fb3cee96315",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-01-04T22:47:09Z",
    "title_canon_sha256": "0bb10f3f7a6c8d8e1041be66db02bb1142963ace2fc024f267399190ebb73113"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.0843",
    "kind": "arxiv",
    "version": 2
  }
}