Pith Number

pith:QDTUTV4A

pith:2011:QDTUTV4AW3VKVX6EWQJEJABO64

not attested not anchored not stored refs pending

Optical observations of Ultra Steep Spectrum radio sources

Ian R. Stevens, Samuel J. George

arxiv:1110.2467 v1 · 2011-10-11 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QDTUTV4AW3VKVX6EWQJEJABO64}

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	2026-05-18T04:11:08.983159Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80e749d780b6eaaadfc4b41244802ef73ae8f4d21f286a9f862669d60582dfa8

Aliases

arxiv: 1110.2467 · arxiv_version: 1110.2467v1 · doi: 10.48550/arxiv.1110.2467 · pith_short_12: QDTUTV4AW3VK · pith_short_16: QDTUTV4AW3VKVX6E · pith_short_8: QDTUTV4A

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/QDTUTV4AW3VKVX6EWQJEJABO64 \
  | 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: 80e749d780b6eaaadfc4b41244802ef73ae8f4d21f286a9f862669d60582dfa8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de0411839a80ec36d434785f0fc13e973d808e52cab5a2ebdfbed11d2e247723",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-10-11T19:07:20Z",
    "title_canon_sha256": "7a8b9c75cc3b99aaed1cc1a26d4056e3e586138484b929fe12c9daaf09174325"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.2467",
    "kind": "arxiv",
    "version": 1
  }
}