Pith Number

pith:7FMXMTID

pith:2011:7FMXMTID4PAQORWD7OJOIP42N2

not attested not anchored not stored refs pending

How well can we measure and understand foregrounds with 21 cm experiments?

Adrian Liu, Max Tegmark

arxiv:1106.0007 v3 · 2011-05-31 · astro-ph.CO · 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{7FMXMTID4PAQORWD7OJOIP42N2}

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	2026-05-18T04:04:43.650935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f959764d03e3c10746c3fb92e43f9a6e95f2dd68f4cf6718dbe96bb83e60947b

Aliases

arxiv: 1106.0007 · arxiv_version: 1106.0007v3 · doi: 10.48550/arxiv.1106.0007 · pith_short_12: 7FMXMTID4PAQ · pith_short_16: 7FMXMTID4PAQORWD · pith_short_8: 7FMXMTID

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/7FMXMTID4PAQORWD7OJOIP42N2 \
  | 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: f959764d03e3c10746c3fb92e43f9a6e95f2dd68f4cf6718dbe96bb83e60947b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a60d129e9cfda6a70c151ad2fcc3cffcd535960f2713ed8170deb7ebbb46bd4b",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-05-31T20:00:06Z",
    "title_canon_sha256": "0d21ae6aeb8d9696215f4f21742055e408ac15da99efcad408bef74896a1ec04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.0007",
    "kind": "arxiv",
    "version": 3
  }
}