Pith Number

pith:W6V5PAQO

pith:2011:W6V5PAQONVKWMYWB4VBAGQVFPB

not attested not anchored not stored refs pending

The metal contents of two groups of galaxies

1), 2), (2) Utrecht University, (3) KIPAC/Stanford, (4) Columbia University), C. P. de Vries (1) ((1) SRON, F. Paerels (4), F. Verbunt (2, J. de Plaa (1), J. S. Kaastra (1, N. Werner (3), Y. G. Grange (1)

arxiv:1104.0001 v1 · 2011-03-31 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W6V5PAQONVKWMYWB4VBAGQVFPB}

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	2026-05-18T04:20:23.091093Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7abd7820e6d556662c1e5420342a578403d377f3de984ca2c14d776e9d896f2

Aliases

arxiv: 1104.0001 · arxiv_version: 1104.0001v1 · doi: 10.48550/arxiv.1104.0001 · pith_short_12: W6V5PAQONVKW · pith_short_16: W6V5PAQONVKWMYWB · pith_short_8: W6V5PAQO

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/W6V5PAQONVKWMYWB4VBAGQVFPB \
  | 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: b7abd7820e6d556662c1e5420342a578403d377f3de984ca2c14d776e9d896f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e8ac0001b6bba7069b3aa38311c3502d473e0aba9e7f16f500b6939ad8ae4d9",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-31T20:00:00Z",
    "title_canon_sha256": "4be30ebc81331703b0beb6a5572a54b5bfb9d27e346bdbff7d8e9f5b07dfce44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.0001",
    "kind": "arxiv",
    "version": 1
  }
}