Pith Number

pith:BMUFXO7C

pith:2011:BMUFXO7C66RG74GH22O46MTB5C

not attested not anchored not stored refs pending

The age of extremely red and massive galaxies at very high redshift

M. Lopez-Corredoira, N. Castro-Rodriguez

arxiv:1111.2726 v2 · 2011-11-11 · 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{BMUFXO7C66RG74GH22O46MTB5C}

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	2026-05-18T01:59:40.226626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b285bbbe2f7a26ff0c7d69dcf3261e8aa328fcb6cac06d529a7dc4095fdcfc5

Aliases

arxiv: 1111.2726 · arxiv_version: 1111.2726v2 · doi: 10.48550/arxiv.1111.2726 · pith_short_12: BMUFXO7C66RG · pith_short_16: BMUFXO7C66RG74GH · pith_short_8: BMUFXO7C

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/BMUFXO7C66RG74GH22O46MTB5C \
  | 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: 0b285bbbe2f7a26ff0c7d69dcf3261e8aa328fcb6cac06d529a7dc4095fdcfc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1b0c6f39467b73769cc95a8547b3df396ae17366f2071326fc08fa87a682304",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-11T12:55:39Z",
    "title_canon_sha256": "08f608170d851e5c4b55e2da6fdb8a4504cd86c6e358eb36c13a87513328e764"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2726",
    "kind": "arxiv",
    "version": 2
  }
}