Pith Number

pith:3WWQNLTK

pith:2011:3WWQNLTKPIG7CKSGVLMHSKLEXT

not attested not anchored not stored refs pending

Estimating the redshift of PKS 0447-439 through its GeV-TeV emission

Elisa Prandini, Fabrizio Tavecchio, Giacomo Bonnoli

arxiv:1110.4038 v2 · 2011-10-18 · 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{3WWQNLTKPIG7CKSGVLMHSKLEXT}

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	2026-05-18T03:51:47.258563Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddad06ae6a7a0df12a46aad8792964bcf02c647f90f4c2c14af83dd05f6b7ae8

Aliases

arxiv: 1110.4038 · arxiv_version: 1110.4038v2 · doi: 10.48550/arxiv.1110.4038 · pith_short_12: 3WWQNLTKPIG7 · pith_short_16: 3WWQNLTKPIG7CKSG · pith_short_8: 3WWQNLTK

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/3WWQNLTKPIG7CKSGVLMHSKLEXT \
  | 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: ddad06ae6a7a0df12a46aad8792964bcf02c647f90f4c2c14af83dd05f6b7ae8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "babb70c974ac303d544d8c367dab0d01b11c2fc1ed1a75d2a72e61c4ddc2580b",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-10-18T16:06:50Z",
    "title_canon_sha256": "2a5185322368c6d8e40c1fac22ff6afb727904c6207500c09d7144fec226a388"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.4038",
    "kind": "arxiv",
    "version": 2
  }
}