Pith Number

pith:DUQ42KYS

pith:2021:DUQ42KYSZIFBUR3HD3P4QQHHJJ

not attested not anchored not stored refs pending

The dust attenuation law in $z\sim 6$ quasars

A. Ferrara, A. Pallottini, F. Di Mascia, R. Maiolino, S. Carniani, S. Gallerani, V. D'Odorico

arxiv:2106.15625 v1 · 2021-06-29 · 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{DUQ42KYSZIFBUR3HD3P4QQHHJJ}

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	2026-07-05T02:59:23.975443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d21cd2b12ca0a1a47671edfc840e74a57adde54c84dd3bfa8432ea29c843bcb

Aliases

arxiv: 2106.15625 · arxiv_version: 2106.15625v1 · doi: 10.48550/arxiv.2106.15625 · pith_short_12: DUQ42KYSZIFB · pith_short_16: DUQ42KYSZIFBUR3H · pith_short_8: DUQ42KYS

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/DUQ42KYSZIFBUR3HD3P4QQHHJJ \
  | 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: 1d21cd2b12ca0a1a47671edfc840e74a57adde54c84dd3bfa8432ea29c843bcb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b74069a418a0e97404f8491f90fef8b9f6b953f496af1d3309f1f5c6702e40fa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-06-29T18:00:00Z",
    "title_canon_sha256": "ecd1887d8f69767cd09cedba02270adc33c5dc8ac494aef28650c8ed209e6366"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.15625",
    "kind": "arxiv",
    "version": 1
  }
}