Pith Number

pith:XWJQQ6JT

pith:2002:XWJQQ6JTYH2LYIU5SJL5VLAZK3

not attested not anchored not stored refs pending

Observations of the Hubble Deep Field South with the Infrared Space Observatory - II. Associations and star formation rates

A. Dapergolas, A. Efstathiou, A.F. Heavens, A. Franceschini, A. Verma, D. Elbaz, D. Rigopoulou, E. Kontizas, G.L. Granato, J.I. Gonzalez-Serrano, L. Silva, M. Kontizas, M. Rowan-Robinson, P.P. van der Werf, R. Carballo, R. G. Mann, S. Oliver, S. Serjeant

arxiv:astro-ph/0201510 v2 · 2002-01-30 · 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{XWJQQ6JTYH2LYIU5SJL5VLAZK3}

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	2026-07-04T16:29:20.262548Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd93087933c1f4bc229d9257daac1956fccad3949e75141b8f2d97e5e8a5a406

Aliases

arxiv: astro-ph/0201510 · arxiv_version: astro-ph/0201510v2 · doi: 10.48550/arxiv.astro-ph/0201510 · pith_short_12: XWJQQ6JTYH2L · pith_short_16: XWJQQ6JTYH2LYIU5 · pith_short_8: XWJQQ6JT

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/XWJQQ6JTYH2LYIU5SJL5VLAZK3 \
  | 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: bd93087933c1f4bc229d9257daac1956fccad3949e75141b8f2d97e5e8a5a406

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7673e759d837cdf6884f171f680c9398632c6b4e45bb785acd65b9996cdf2087",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-01-30T16:18:56Z",
    "title_canon_sha256": "bb9e323b2e88d3c38ad2e45b1370c20ac6404c3a9c7b2bd5b4839266076a93c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0201510",
    "kind": "arxiv",
    "version": 2
  }
}