Pith Number

pith:HTJMAJBQ

pith:2017:HTJMAJBQGIP3IG7GAWFOB5LCIF

not attested not anchored not stored refs pending

Global 21-cm signal extraction from foreground and instrumental effects I: Pattern recognition framework for separation using training sets

David Rapetti, Eric R. Switzer, Jack O. Burns, Keith Tauscher

arxiv:1711.03173 v1 · 2017-11-08 · astro-ph.IM · 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{HTJMAJBQGIP3IG7GAWFOB5LCIF}

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	2026-05-18T00:02:39.779237Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cd2c02430321fb41be6058ae0f5624169e5996a419f1121dbe5e438f534681a

Aliases

arxiv: 1711.03173 · arxiv_version: 1711.03173v1 · doi: 10.48550/arxiv.1711.03173 · pith_short_12: HTJMAJBQGIP3 · pith_short_16: HTJMAJBQGIP3IG7G · pith_short_8: HTJMAJBQ

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/HTJMAJBQGIP3IG7GAWFOB5LCIF \
  | 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: 3cd2c02430321fb41be6058ae0f5624169e5996a419f1121dbe5e438f534681a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "856898342d77e8dd80e68e6823ea55a061291a503af2460b12c2728f34fb3111",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-11-08T21:25:09Z",
    "title_canon_sha256": "6fd01b94e356fb18b182383f6f1d83fb59714c8f552753c881dea5bdbe7cebdb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.03173",
    "kind": "arxiv",
    "version": 1
  }
}