Pith Number

pith:35GG22F7

pith:2000:35GG22F7BZ3VHWRAUVS34B6RGK

not attested not anchored not stored refs pending

Optical surface photometry of radio galaxies - II. Observations and data analysis

F. Govoni, G. Fasano, R. Falomo, R. Scarpa

arxiv:astro-ph/0001449 v1 · 2000-01-26 · 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{35GG22F7BZ3VHWRAUVS34B6RGK}

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	2026-07-04T16:15:58.265173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df4c6d68bf0e7753da20a565be07d1328ed15a40827ca7800919f3c9760895c3

Aliases

arxiv: astro-ph/0001449 · arxiv_version: astro-ph/0001449v1 · doi: 10.48550/arxiv.astro-ph/0001449 · pith_short_12: 35GG22F7BZ3V · pith_short_16: 35GG22F7BZ3VHWRA · pith_short_8: 35GG22F7

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/35GG22F7BZ3VHWRAUVS34B6RGK \
  | 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: df4c6d68bf0e7753da20a565be07d1328ed15a40827ca7800919f3c9760895c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26cd6954cd28becfa264ccb48fe33febafbd8a40b4d3900089e06219e1d35660",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-01-26T09:57:25Z",
    "title_canon_sha256": "d13ede17eb4ff6aad4f149b1ce8f99dccbcf39566949ee494483025857d91c62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0001449",
    "kind": "arxiv",
    "version": 1
  }
}