Pith Number

pith:HGNEC7XL

pith:2005:HGNEC7XLXUSSYNRTWWKBFS76OZ

not attested not anchored not stored refs pending

Spitzer Imaging of i'-drop Galaxies: Old Stars at z~6

(2) University of Wisconsin-Madison, (3) Spitzer Science Center, (4) Caltech Astronomy (5) Institute of Astronomy, Andrew Bunker (1), Cambridge), Elizabeth Stanway (2), Laurence Eyles (1), Mark Lacy (3), Michelle Doherty (5) ((1) University of Exeter, Richard Ellis (4)

arxiv:astro-ph/0502385 v2 · 2005-02-18 · 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{HGNEC7XLXUSSYNRTWWKBFS76OZ}

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	2026-07-04T16:50:51.150536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

399a417eebbd252c3633b59412cbfe765f532211d6023defdafaa3df88e7145b

Aliases

arxiv: astro-ph/0502385 · arxiv_version: astro-ph/0502385v2 · doi: 10.48550/arxiv.astro-ph/0502385 · pith_short_12: HGNEC7XLXUSS · pith_short_16: HGNEC7XLXUSSYNRT · pith_short_8: HGNEC7XL

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/HGNEC7XLXUSSYNRTWWKBFS76OZ \
  | 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: 399a417eebbd252c3633b59412cbfe765f532211d6023defdafaa3df88e7145b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4eb8ded9da94b54a73e7051c2434ff4cd6c011b076dca7564354a018e44707fc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-02-18T21:04:30Z",
    "title_canon_sha256": "3fac20c4c02d7bfc49389078e4f0162b4145138f9ea1604466b51bcf6f000e75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0502385",
    "kind": "arxiv",
    "version": 2
  }
}