Pith Number

pith:HTYEDLKF

pith:2010:HTYEDLKF5TWH4YFG6KJUYI3H7G

not attested not anchored not stored refs pending

Do Galaxies Change in Size ? An Angular Size Test at Low Redshift with SDSS Data

Alexander Unzicker, Karl Fabian

arxiv:1011.4956 v3 · 2010-11-22 · physics.gen-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{HTYEDLKF5TWH4YFG6KJUYI3H7G}

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	2026-05-18T02:23:23.977760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cf041ad45ecec7e60a6f2934c2367f990520f88ddc3dd498d5d69c07c531625

Aliases

arxiv: 1011.4956 · arxiv_version: 1011.4956v3 · doi: 10.48550/arxiv.1011.4956 · pith_short_12: HTYEDLKF5TWH · pith_short_16: HTYEDLKF5TWH4YFG · pith_short_8: HTYEDLKF

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/HTYEDLKF5TWH4YFG6KJUYI3H7G \
  | 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: 3cf041ad45ecec7e60a6f2934c2367f990520f88ddc3dd498d5d69c07c531625

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c59a4ab38134686ab1d34095b7af53b3a5a98aea320ac475793777212f0fc6c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2010-11-22T21:29:46Z",
    "title_canon_sha256": "f5b7c76f8a12a43ebdfc0ed824746321664a670da2d358502d46ddf89b308e09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.4956",
    "kind": "arxiv",
    "version": 3
  }
}