Pith Number

pith:ON7WM2CN

pith:2002:ON7WM2CNP5ES4HFELFMRQ7MKMZ

not attested not anchored not stored refs pending

Sub-millimetre observations of the Hubble Deep Field and Flanking Fields

A. Blain, A. Efstathiou, A. Lawrence, D. Hughes, J.A. Peacock, J.S. Dunlop, M. Fox, M. Longair, M. Rowan-Robinson, R.G. Mann, R.J. Ivison, S. Oliver, S. Serjeant, T. Jenness

arxiv:astro-ph/0201502 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{ON7WM2CNP5ES4HFELFMRQ7MKMZ}

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	2026-07-04T16:29:20.065336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

737f66684d7f492e1ca45959187d8a6649181bf4c9cbbb2f8d6e67f01a865944

Aliases

arxiv: astro-ph/0201502 · arxiv_version: astro-ph/0201502v2 · doi: 10.48550/arxiv.astro-ph/0201502 · pith_short_12: ON7WM2CNP5ES · pith_short_16: ON7WM2CNP5ES4HFE · pith_short_8: ON7WM2CN

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/ON7WM2CNP5ES4HFELFMRQ7MKMZ \
  | 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: 737f66684d7f492e1ca45959187d8a6649181bf4c9cbbb2f8d6e67f01a865944

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "471f31a418cbdf46ffdf6e490f167509347a2cdca52a45b98bfb849f97625f80",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-01-30T12:29:38Z",
    "title_canon_sha256": "2a923ba6be0eec765fa29ec3c630d4d77a3b7b731e7a32feed1a9c1430459b76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0201502",
    "kind": "arxiv",
    "version": 2
  }
}