Pith Number

pith:EBAIYB7J

pith:2010:EBAIYB7JBM6ZRSEV4X52XW74TB

not attested not anchored not stored refs pending

The Discovery of Host Galaxy HI Absorption in CTA 21

C.J. Salter, D. J. Saikia, R. Minchin, T. Ghosh, Y. Chandola

arxiv:1004.4006 v1 · 2010-04-22 · 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{EBAIYB7JBM6ZRSEV4X52XW74TB}

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	2026-05-18T02:07:54.838897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20408c07e90b3d98c895e5fbabdbfc98738a2b848cd5e903cfb0123b619124db

Aliases

arxiv: 1004.4006 · arxiv_version: 1004.4006v1 · doi: 10.48550/arxiv.1004.4006 · pith_short_12: EBAIYB7JBM6Z · pith_short_16: EBAIYB7JBM6ZRSEV · pith_short_8: EBAIYB7J

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/EBAIYB7JBM6ZRSEV4X52XW74TB \
  | 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: 20408c07e90b3d98c895e5fbabdbfc98738a2b848cd5e903cfb0123b619124db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f4a87751394c0c3bfda01367a805a8283ab68cc58f47776329297448cb50b82",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-04-22T20:05:40Z",
    "title_canon_sha256": "e839c45ad9608f604e6abda6d3a7f51fd5c443904fe0641e1a5f4efebcdecd26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.4006",
    "kind": "arxiv",
    "version": 1
  }
}