Pith Number

pith:7CZ5HWDD

pith:2022:7CZ5HWDDDF3SQDGI6TLRMGXTI2

not attested not anchored not stored refs pending

Optical Properties of Peaked Spectrum Radio Sources

A. Rodr\'iguez-Ardila, J. R. Callingham, L. Dahmer-Hahn, M. A. Fonseca-Faria, M. Marinello, R. Riffel, R. S. Nascimento, T. Beuchert

arxiv:2201.06612 v2 · 2022-01-17 · 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{7CZ5HWDDDF3SQDGI6TLRMGXTI2}

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	2026-07-05T03:50:37.419777Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8b3d3d8631977280cc8f4d7161af3469abb4d279d4578b5564e23789744f6fe

Aliases

arxiv: 2201.06612 · arxiv_version: 2201.06612v2 · doi: 10.48550/arxiv.2201.06612 · pith_short_12: 7CZ5HWDDDF3S · pith_short_16: 7CZ5HWDDDF3SQDGI · pith_short_8: 7CZ5HWDD

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/7CZ5HWDDDF3SQDGI6TLRMGXTI2 \
  | 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: f8b3d3d8631977280cc8f4d7161af3469abb4d279d4578b5564e23789744f6fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0423cf32bafee358c280b43705fdb83a7ab35fcafb9112a4bab866dcd6e951e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2022-01-17T19:48:31Z",
    "title_canon_sha256": "0c276e340d31da686667c3e7bd48c9a097e667e6c4c4761addee450849ec14bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.06612",
    "kind": "arxiv",
    "version": 2
  }
}