Pith Number

pith:R22Z52LF

pith:2015:R22Z52LFMTJ3BITGSHRCJYIFHW

not attested not anchored not stored refs pending

The build-up of the cD halo of M87 - evidence for accretion in the last Gyr

A. Longobardi, J.C. Mihos, M. Arnaboldi, O. Gerhard

arxiv:1504.04369 v2 · 2015-04-16 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R22Z52LFMTJ3BITGSHRCJYIFHW}

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	2026-05-18T01:37:34.778733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8eb59ee96564d3b0a26691e224e1053db85ad30549c271ad9c1a8b1e0e573172

Aliases

arxiv: 1504.04369 · arxiv_version: 1504.04369v2 · doi: 10.48550/arxiv.1504.04369 · pith_short_12: R22Z52LFMTJ3 · pith_short_16: R22Z52LFMTJ3BITG · pith_short_8: R22Z52LF

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/R22Z52LFMTJ3BITGSHRCJYIFHW \
  | 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: 8eb59ee96564d3b0a26691e224e1053db85ad30549c271ad9c1a8b1e0e573172

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f97c13e5fe89a497db2e1a5c25b22dd1717fa28d4f59777d10d943f50d15680f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-16T20:00:22Z",
    "title_canon_sha256": "cd3b362f466a595ca518eab8baf5bfb1e5051034087529c950a7c913f466b065"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04369",
    "kind": "arxiv",
    "version": 2
  }
}