Pith Number

pith:PEQ4KPP5

pith:2003:PEQ4KPP5RFD3WTQIRELYJ3OAZR

not attested not anchored not stored refs pending

Redshifts in the Hubble Deep Field South

Gabriela Mallen-Ornelas, Marcin Sawicki

arxiv:astro-ph/0305544 v1 · 2003-05-28 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PEQ4KPP5RFD3WTQIRELYJ3OAZR}

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	2026-07-04T16:37:12.952940Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7921c53dfd8947bb4e08891784edc0cc54b0204982ee884f5e903503c67a2a5a

Aliases

arxiv: astro-ph/0305544 · arxiv_version: astro-ph/0305544v1 · doi: 10.48550/arxiv.astro-ph/0305544 · pith_short_12: PEQ4KPP5RFD3 · pith_short_16: PEQ4KPP5RFD3WTQI · pith_short_8: PEQ4KPP5

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/PEQ4KPP5RFD3WTQIRELYJ3OAZR \
  | 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: 7921c53dfd8947bb4e08891784edc0cc54b0204982ee884f5e903503c67a2a5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f26a0cb81f98dc4cbc24ea6826a5ac6e704c9f4b302f10b32ad7c6bcf084d04",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-05-28T19:27:31Z",
    "title_canon_sha256": "93e3035414318a09a06c243639e1e9747dcdf0b6d99ca3fe0c215dba9f62d598"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0305544",
    "kind": "arxiv",
    "version": 1
  }
}