Pith Number

pith:M6OL4Q23

pith:2009:M6OL4Q23JWKYEC3CMJXTKLOV7P

not attested not anchored not stored refs pending

The discovery of a typical radio galaxy at z = 4.88

(2) LJMU, 3), (3) Nottingham, (4) Oxford), Chris Simpson (2), Daniel J.B. Smith (2, David Bonfield (1) ((1) Hertfordshire, Hanifa Teimourian (1), Matt J. Jarvis (1), Steve Rawlings (4)

arxiv:0907.1447 v1 · 2009-07-09 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M6OL4Q23JWKYEC3CMJXTKLOV7P}

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	2026-05-18T02:13:04.413347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

679cbe435b4d95820b62626f352dd5fbdb4f4a588b272f3be0112ed690cf68a5

Aliases

arxiv: 0907.1447 · arxiv_version: 0907.1447v1 · doi: 10.48550/arxiv.0907.1447 · pith_short_12: M6OL4Q23JWKY · pith_short_16: M6OL4Q23JWKYEC3C · pith_short_8: M6OL4Q23

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/M6OL4Q23JWKYEC3CMJXTKLOV7P \
  | 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: 679cbe435b4d95820b62626f352dd5fbdb4f4a588b272f3be0112ed690cf68a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3bde82de032b4cce292449d1195ec90db2343bcace2552a7e57e3f7b5f87a1d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-09T08:26:33Z",
    "title_canon_sha256": "48ded4480967f1ba963b01ea9c607a5d716b9a46c58e81dacb419b451d3b7dff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1447",
    "kind": "arxiv",
    "version": 1
  }
}