Pith Number

pith:MMDKHSVQ

pith:2017:MMDKHSVQX6WXFHQ5KUIFID5AKP

not attested not anchored not stored refs pending

On the discovery of fast molecular gas in the UFO/BAL quasar APM 08279+5255 at z=3.912

A. Ferrara, C. Ceccarelli, C. Cicone, C. Feruglio, C. Vignali, D. Downes, E. Piconcelli, F. Fiore, G. Vietri, L. Zappacosta, M. Bischetti, N. Menci, R. Maiolino, R. Neri, S. Gallerani

arxiv:1706.05527 v2 · 2017-06-17 · 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{MMDKHSVQX6WXFHQ5KUIFID5AKP}

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	2026-05-18T00:28:45.953346Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6306a3cab0bfad729e1d5510540fa053edce1d17080ee260296493cdc8fe6666

Aliases

arxiv: 1706.05527 · arxiv_version: 1706.05527v2 · doi: 10.48550/arxiv.1706.05527 · pith_short_12: MMDKHSVQX6WX · pith_short_16: MMDKHSVQX6WXFHQ5 · pith_short_8: MMDKHSVQ

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/MMDKHSVQX6WXFHQ5KUIFID5AKP \
  | 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: 6306a3cab0bfad729e1d5510540fa053edce1d17080ee260296493cdc8fe6666

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9fa21f484cf153ea6e43380e0bd262c4f8ca002d0a6bddec1cc920f911a776f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-06-17T12:38:50Z",
    "title_canon_sha256": "c91bbeff8871306ee063d0914605cbcff80ed3194c5a4d8d08e90f7051198c94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.05527",
    "kind": "arxiv",
    "version": 2
  }
}