Pith Number

pith:KEQE7W7G

pith:2012:KEQE7W7GMVSSNZVACIEVF6LMYZ

not attested not anchored not stored refs pending

SDSS J102623.61+254259.5: the second most distant blazar at z=5.3

A. Rau, F. Tavecchio, G. Ghirlanda, G. Ghisellini, G. Tagliaferri, J. Greiner, L. Foschini, M. Nardini, N. Gehrels, T. Sbarrato

arxiv:1208.3467 v1 · 2012-08-16 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KEQE7W7GMVSSNZVACIEVF6LMYZ}

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	2026-05-18T01:55:15.132201Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51204fdbe6656526e6a0120952f96cc669a8346f8007a016eff9fba172aa4197

Aliases

arxiv: 1208.3467 · arxiv_version: 1208.3467v1 · doi: 10.48550/arxiv.1208.3467 · pith_short_12: KEQE7W7GMVSS · pith_short_16: KEQE7W7GMVSSNZVA · pith_short_8: KEQE7W7G

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/KEQE7W7GMVSSNZVACIEVF6LMYZ \
  | 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: 51204fdbe6656526e6a0120952f96cc669a8346f8007a016eff9fba172aa4197

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2c6bce4b710b87df18e247237984785e188f0413d1cfd9dced5f5e74536001d",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-08-16T20:00:03Z",
    "title_canon_sha256": "b25b92e12479f6830fb77123cdc9358493d3aabe15e338bb8cf8877f2692953f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.3467",
    "kind": "arxiv",
    "version": 1
  }
}