Pith Number

pith:NKGBTWA4

pith:2000:NKGBTWA4LFGEM3NJZGGLBDL4IN

not attested not anchored not stored refs pending

1-5 micron imaging of 3CRR galaxies: The K-z relation and the geometry of the torus

(2) University of Leicester, (3) University of Oxford), Chris Simpson (1), J. V. Wall (3) ((1) Subaru Telescope, Martin Ward (2)

arxiv:astro-ph/0007475 v1 · 2000-07-31 · 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{NKGBTWA4LFGEM3NJZGGLBDL4IN}

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	2026-07-04T16:16:58.494683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a8c19d81c594c466da9c98cb08d7c4344d88c46bd019a618a6053d7bae97637

Aliases

arxiv: astro-ph/0007475 · arxiv_version: astro-ph/0007475v1 · doi: 10.48550/arxiv.astro-ph/0007475 · pith_short_12: NKGBTWA4LFGE · pith_short_16: NKGBTWA4LFGEM3NJ · pith_short_8: NKGBTWA4

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/NKGBTWA4LFGEM3NJZGGLBDL4IN \
  | 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: 6a8c19d81c594c466da9c98cb08d7c4344d88c46bd019a618a6053d7bae97637

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6418e1b0562d0004a62eef0365e7163a5c4e5c100a806a70e209ef677f130187",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-07-31T20:30:05Z",
    "title_canon_sha256": "5b0d4092fe6f5a9d22a9e8b6c07a57f06b7e4fdd0f06752e08b42abe39cc0190"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0007475",
    "kind": "arxiv",
    "version": 1
  }
}