Pith Number

pith:4F7S37A5

pith:2018:4F7S37A5Y2ABYHY5MRJCBOBEHK

not attested not anchored not stored refs pending

Joint T1 and T2 Mapping with Tiny Dictionaries and Subspace-Constrained Reconstruction

Jens Frahm, Martin Uecker, Volkert Roeloffs

arxiv:1812.09560 v1 · 2018-12-22 · physics.med-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4F7S37A5Y2ABYHY5MRJCBOBEHK}

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	2026-07-05T02:05:21.900746Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e17f2dfc1dc6801c1f1d645220b8243aacf3bec93908aa30c4b2728ac4546b43

Aliases

arxiv: 1812.09560 · arxiv_version: 1812.09560v1 · doi: 10.48550/arxiv.1812.09560 · pith_short_12: 4F7S37A5Y2AB · pith_short_16: 4F7S37A5Y2ABYHY5 · pith_short_8: 4F7S37A5

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/4F7S37A5Y2ABYHY5MRJCBOBEHK \
  | 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: e17f2dfc1dc6801c1f1d645220b8243aacf3bec93908aa30c4b2728ac4546b43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aed6de40e262d0dc8d39fd16078559fd47124ed768f91945e59220c4c0565e1f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2018-12-22T16:38:18Z",
    "title_canon_sha256": "409485ad3c12a34bd30bc805413ea9b4fcedbbcaa2a72cce433411837f99993f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.09560",
    "kind": "arxiv",
    "version": 1
  }
}