Pith Number

pith:4L67YQHM

pith:2020:4L67YQHMMBKCAC472LDFWJXKL4

not attested not anchored not stored refs pending

Spectral index of the Galactic foreground emission in the 50-87 MHz range

Anastasia Fialkov, Daniel C. Price, Gianni Bernardi, Hugh Garsden, Jayce Dowell, Lincoln J. Greehill, Marta Spinelli

arxiv:2011.03994 v2 · 2020-11-08 · astro-ph.IM · 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{4L67YQHMMBKCAC472LDFWJXKL4}

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	2026-07-05T02:43:11.498648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2fdfc40ec6054200b9fd2c65b26ea5f0d391980c842b447c06b701d6eaee1ba

Aliases

arxiv: 2011.03994 · arxiv_version: 2011.03994v2 · doi: 10.48550/arxiv.2011.03994 · pith_short_12: 4L67YQHMMBKC · pith_short_16: 4L67YQHMMBKCAC47 · pith_short_8: 4L67YQHM

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/4L67YQHMMBKCAC472LDFWJXKL4 \
  | 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: e2fdfc40ec6054200b9fd2c65b26ea5f0d391980c842b447c06b701d6eaee1ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f038d4773df548a8f6e9ae0b2212247d53bc0789df37ae939184aa8607b89fa",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2020-11-08T14:49:34Z",
    "title_canon_sha256": "21e5f2035c72358491e4d5ffb443159bc56dac719c72dd1ff9a2a90553d11158"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.03994",
    "kind": "arxiv",
    "version": 2
  }
}