Pith Number

pith:XZWLGTY7

pith:2006:XZWLGTY7SFR4G26HUWNAREW4IP

not attested not anchored not stored refs pending

The 6C** sample of steep-spectrum radio sources: I - Radio data, near-infrared imaging and optical spectroscopy

Chris J. Willott, Chris Simpson, Hans-Rainer Kloeckner, Katherine M. Blundell, Maria J. Cruz, Matt J. Jarvis, Ross J. McLure, Steve Croft, Steve Rawlings, Thomas A. Targett

arxiv:astro-ph/0609790 v1 · 2006-09-28 · 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{XZWLGTY7SFR4G26HUWNAREW4IP}

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	2026-07-04T16:59:28.224011Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be6cb34f1f9163c36bc7a59a0892dc43e94e2482be703a2b85c3238321cad333

Aliases

arxiv: astro-ph/0609790 · arxiv_version: astro-ph/0609790v1 · doi: 10.48550/arxiv.astro-ph/0609790 · pith_short_12: XZWLGTY7SFR4 · pith_short_16: XZWLGTY7SFR4G26H · pith_short_8: XZWLGTY7

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/XZWLGTY7SFR4G26HUWNAREW4IP \
  | 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: be6cb34f1f9163c36bc7a59a0892dc43e94e2482be703a2b85c3238321cad333

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "354b0293c28dd9b62a63a6c0ffbfae8f741350fb08d9c05ad7466d5ee12fec37",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-09-28T17:24:02Z",
    "title_canon_sha256": "0fa9d2606f18b4a4018fee09c42ded53d74f54586c56bf7ef5a741f81f5bf4eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0609790",
    "kind": "arxiv",
    "version": 1
  }
}