Byte-exact recovery receipt: frame 000511

Status: authenticated locally on 2026-07-27. This is metadata-only staging for the unsigned v1.1.0 source and site update.

One emission frame from the April 2023 Truth Beam PoliePals Trailer record had a single 262,144-byte UnixFS block that could no longer be retrieved from the original pin. A numerically faithful reconstruction was published and kept every surviving byte unchanged. The complete byte-exact frame has now been recovered from a retained backup.

Recovered artifacts

The NPY is a valid C-order array with shape (1024, 1024, 3), dtype little-endian float32, and a 128-byte header. The recovered block is exactly file bytes [8,388,608, 8,650,752) of that frame.

Authentication

The result is authenticated by measurements that do not depend on the backup story:

1. ipfs add --only-hash --cid-version=0 reproduces both CIDs above. Those target CIDs were already present in public repository history at commit d294b0d53f29f31e309e3f1fa8fc4083a3f16029, before this recovery.
2. Against the published reconstruction, every byte before and after the missing block is identical. All 15,658 differing bytes are confined to that block.
3. Inside the block, 49,944 of 65,536 float32 values are already bit-identical in the reconstruction, or 76.20849609375 percent. The maximum absolute error is 1.52587890625e-05, matching the published reconstruction account.
4. The recovered standalone block is byte-identical to the corresponding slice of the recovered full frame.

The complete machine-readable record is RECOVERY_RECEIPT.json.

Availability

At the time of this receipt (27 July 2026) the exact NPY and recovered block were retained in the private owner archive and were absent from Git and from this site overlay. Update, 30 July 2026: the byte-exact frame and recovered UnixFS block were published under pinata/RECOVERED_truth_beam_poliepals_trailer/ and indexed on DOWNLOADS. Update, 3 August 2026: the same byte-exact frame was published in the immutable 2023 trailer archive (archive/2023/truth_beam_poliepals_trailer/v1/1682718815/emissions/000511_bc48b046016adb2ed149471ab0f683f5a9d8dbff9cd544ba2048231c1a4007b2.npy, 12,583,040 bytes, SHA-256 6b7a6bc9f052d78dd161d20c22a19a6341f1447af6721a96f72425ce4bce9c1a). This receipt records the recovery; the archive publication has its own receipt in the archive's _control/ prefix. The bytes remain outside Git.

The JSON twin, RECOVERY_RECEIPT.json, is the receipt as issued on 27 July 2026; its publication and car_status fields describe that date and are left as issued.

Preservation and scope

The byte-exact frame enables repair of the decomposed public mirror. The earlier reconstruction remains published under its distinct name because it documents a useful deterministic-recovery result and the float reproducibility lesson.

The historical root CID remains QmejyJWognSYn7UhygsHuQzkDK5vY4izU9SsCL785NsHCN. Its historical CAR file remains labelled partial because it was recovered before the block was; an independent only-hash Kubo run over the restored bytes has since reproduced the historical wrapped root, the inner session directory and the frame-511 CID exactly (the trailer archive's CID_REPRODUCTION.json). No historical signed manifest, signature, CID, or release byte is changed by this unsigned recovery record.

Reproduce the file checks

sha256sum 000511_bc48b046016adb2ed149471ab0f683f5a9d8dbff9cd544ba2048231c1a4007b2.npy
sha256sum lost_block_32.bin
ipfs add --only-hash --cid-version=0 -Q 000511_bc48b046016adb2ed149471ab0f683f5a9d8dbff9cd544ba2048231c1a4007b2.npy
ipfs add --only-hash --cid-version=0 -Q lost_block_32.bin