Pith Number

pith:P2CKTBSO

pith:2009:P2CKTBSOPLQQXMIU4QHFO7CELJ

not attested not anchored not stored refs pending

Intrinsic colors and ages of extremely red elliptical galaxies at high redshift

Martin Lopez-Corredoira

arxiv:0911.3825 v1 · 2009-11-19 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P2CKTBSOPLQQXMIU4QHFO7CELJ}

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	2026-05-18T02:10:45.820930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e84a9864e7ae10bb114e40e577c445a41e6183ecac83930a04971bfbe30f6d1

Aliases

arxiv: 0911.3825 · arxiv_version: 0911.3825v1 · doi: 10.48550/arxiv.0911.3825 · pith_short_12: P2CKTBSOPLQQ · pith_short_16: P2CKTBSOPLQQXMIU · pith_short_8: P2CKTBSO

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/P2CKTBSOPLQQXMIU4QHFO7CELJ \
  | 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: 7e84a9864e7ae10bb114e40e577c445a41e6183ecac83930a04971bfbe30f6d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "273d19f81fa8bf7af348aa26f593aec8f116108fc3f08377cefcff7c6d64227c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-19T15:55:29Z",
    "title_canon_sha256": "fff0c7cf2eef90a7bf0c420d700179ad7d81db0c313f8a0c6a32abc10b005afb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.3825",
    "kind": "arxiv",
    "version": 1
  }
}