Pith Number

pith:VDXZNFQG

pith:2010:VDXZNFQGFLBO6TACV4G3UCJAIQ

not attested not anchored not stored refs pending

Westerbork Ultra-Deep Survey of HI at z=0.2

Aeree Chung, Arpad Szomoru, Bianca Poggianti, Boris Deshev, David Schiminovich, Glenn Morrison, Jacqueline van Gorkom, K.S. Dwarakanath, Marc Verheijen, Maria Montero-Castano, Min Yun, Ryan Cybulski

arxiv:1009.0279 v1 · 2010-09-01 · astro-ph.CO

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

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	2026-05-18T04:41:27.016699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8ef9696062ac2ef4c02af0dba092044161a07052d73cb9d5aed4eb89a86ea7e

Aliases

arxiv: 1009.0279 · arxiv_version: 1009.0279v1 · doi: 10.48550/arxiv.1009.0279 · pith_short_12: VDXZNFQGFLBO · pith_short_16: VDXZNFQGFLBO6TAC · pith_short_8: VDXZNFQG

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/VDXZNFQGFLBO6TACV4G3UCJAIQ \
  | 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: a8ef9696062ac2ef4c02af0dba092044161a07052d73cb9d5aed4eb89a86ea7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9097a587b245f4e9bb7535bfba6094ac65065e970b3e0d14e7f69150a39c79cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-01T20:55:49Z",
    "title_canon_sha256": "5e24223054a55983f3d68a7791b25dde28d59fcda94ba42417029212a4fa6638"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.0279",
    "kind": "arxiv",
    "version": 1
  }
}