Pith Number

pith:CZ33F4KP

pith:2005:CZ33F4KPWK7IKXKUB563JGCM3N

not attested not anchored not stored refs pending

An H-band survey of the Herschel Deep Field

D. Thompson, H.J. McCracken, N. Metcalfe, P.M. Weilbacher, R. Fong, T. Shanks

arxiv:astro-ph/0509540 v1 · 2005-09-19 · 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{CZ33F4KPWK7IKXKUB563JGCM3N}

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	2026-05-18T00:48:10.563325Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1677b2f14fb2be855d540f7db4984cdb7fa2864b06ba359190f0f78289feaf31

Aliases

arxiv: astro-ph/0509540 · arxiv_version: astro-ph/0509540v1 · doi: 10.48550/arxiv.astro-ph/0509540 · pith_short_12: CZ33F4KPWK7I · pith_short_16: CZ33F4KPWK7IKXKU · pith_short_8: CZ33F4KP

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/CZ33F4KPWK7IKXKUB563JGCM3N \
  | 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: 1677b2f14fb2be855d540f7db4984cdb7fa2864b06ba359190f0f78289feaf31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5805a611b0a6104eabad5081a954f71d0d0eee32b7db7d556ad8d1414746bdb",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-19T12:39:28Z",
    "title_canon_sha256": "9e850d4b25fa0d0579e5ede427af7ef16a93daf890e52444d5874f0f0320fc82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509540",
    "kind": "arxiv",
    "version": 1
  }
}