Pith Number

pith:2ECQW4K7

pith:2014:2ECQW4K7EALTSINQC6W2BTEIHX

not attested not anchored not stored refs pending

Age and metallicity gradients support hierarchical formation for M87

Ignacio Trujillo, Jos\'e A. Acosta-Pulido, M. Almudena Prieto, Mireia Montes

arxiv:1401.1664 v1 · 2014-01-08 · astro-ph.GA · 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{2ECQW4K7EALTSINQC6W2BTEIHX}

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.

Cited by

1 paper in Pith

Witnessing the rapid growth of disk galaxies over cosmic time using JWST and HST

Receipt and verification

First computed	2026-05-18T02:49:30.575250Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1050b715f20173921b017ada0cc883dcb310a335fc4e35b6c618f02923bafbc

Aliases

arxiv: 1401.1664 · arxiv_version: 1401.1664v1 · doi: 10.48550/arxiv.1401.1664 · pith_short_12: 2ECQW4K7EALT · pith_short_16: 2ECQW4K7EALTSINQ · pith_short_8: 2ECQW4K7

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/2ECQW4K7EALTSINQC6W2BTEIHX \
  | 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: d1050b715f20173921b017ada0cc883dcb310a335fc4e35b6c618f02923bafbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96231807986825dca0381956723ed9eb08940d5b89242e2a619e5d21386bb884",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-01-08T11:15:58Z",
    "title_canon_sha256": "c5eb1df834aea16f65af29508ef98f5e728d5fc35cad36d1bffaecf259426cc7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1664",
    "kind": "arxiv",
    "version": 1
  }
}