Pith Number

pith:YPAJLKGX

pith:2011:YPAJLKGX77LMTBJNEOG3S4FJ74

not attested not anchored not stored refs pending

Revisiting the radio interferometer measurement equation. III. Addressing direction-dependent effects in 21 cm WSRT observations of 3C 147

Oleg M. Smirnov

arxiv:1101.1768 v2 · 2011-01-10 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YPAJLKGX77LMTBJNEOG3S4FJ74}

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	2026-05-18T02:22:59.471999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3c095a8d7ffd6c9852d238db970a9ff30670dceb84e468092edb33879125d3f

Aliases

arxiv: 1101.1768 · arxiv_version: 1101.1768v2 · doi: 10.48550/arxiv.1101.1768 · pith_short_12: YPAJLKGX77LM · pith_short_16: YPAJLKGX77LMTBJN · pith_short_8: YPAJLKGX

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/YPAJLKGX77LMTBJNEOG3S4FJ74 \
  | 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: c3c095a8d7ffd6c9852d238db970a9ff30670dceb84e468092edb33879125d3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "960ce67b43b21e334e8b8a15deb8e33d998c9f02917e612dd0221adc4f7e6574",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-01-10T11:10:17Z",
    "title_canon_sha256": "1fea5a4d549d3ea89b53bf782767537d2cc532505e9aeacc30f4978faaa73289"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1768",
    "kind": "arxiv",
    "version": 2
  }
}