Pith Number

pith:QQDNXNIC

pith:2008:QQDNXNICGYYXWHEMXI657FR2S7

not attested not anchored not stored refs pending

Evolution of the UV Excess in Early-Type Galaxies

Christopher S. Kochanek, David W. Atlee, Roberto J. Assef

arxiv:0808.0010 v2 · 2008-07-31 · 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{QQDNXNICGYYXWHEMXI657FR2S7}

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	2026-05-18T04:29:33.117175Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8406dbb50236317b1c8cba3ddf963a97ddb1d5a9b5e9a8b6e352835f4e3b2bf1

Aliases

arxiv: 0808.0010 · arxiv_version: 0808.0010v2 · doi: 10.48550/arxiv.0808.0010 · pith_short_12: QQDNXNICGYYX · pith_short_16: QQDNXNICGYYXWHEM · pith_short_8: QQDNXNIC

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/QQDNXNICGYYXWHEMXI657FR2S7 \
  | 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: 8406dbb50236317b1c8cba3ddf963a97ddb1d5a9b5e9a8b6e352835f4e3b2bf1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b674fe67eb87d6e05953e6923d06f3fa6093f2fa7b725bb5b3c496d38f181d54",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-07-31T21:37:44Z",
    "title_canon_sha256": "3bb9a396ab7a58f74ef4c3f7bbfb6b28efdb9ed593aad49f1d1c56167181642d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.0010",
    "kind": "arxiv",
    "version": 2
  }
}