Check a pick's record

Every day at 00:15 (Madrid time) we record every pick published the day before in a fingerprint: a hash tree whose root is sealed in Bitcoin with OpenTimestamps. Anyone can check that a pick existed that day with that content, and whether it was changed or deleted later.

Recorded and unchanged

Recorded on 10/28/2026 at 10:56 PM, included in the fingerprint of 10/28/2026.

Pick: #1022537
Tipster: roomprops (@roomprops)
Event: NBA
Selection: 1°cuarto · @2.25 · stake 1
Fingerprint of 10/28/2026: e1c57005 23d76239 c26060b1 7607fe56 cd83284b e4cf2894 2cd6987b 397b12a1
Pick leaf: dc66d08a 8d6201f5 011f042b db34e0e8 81e48538 b18e2c8f 4971e33e 798e8b1dPosition 424 of 447
Bitcoin seal: Anchored in Bitcoin block 973609. Download the .ots

Inclusion proof (8 steps)

1. left 80e84062142ec8946106587955c8cd9ca38b90a435d49ec49b963fd487d61ed5
2. left e00527828e1485235047beefd7ba18f12171493b044a6b6250e6521f3c2b2dfb
3. left cd37b69aa58897749285293b6cb063f74de8ce1e78510bdfa9223fd4befe375d
4. right 1574318ee3dcd39ee70963fc6465d49a42b8850b797c978c1df0660bac2bc13d
5. right b792a777c555bdeee575dc830d4b563d3e5afdc45efc7e0d4f745cf1828df38c
6. left e807f7f727cf678e148f63c8a25a7de8fde55f7b32e33ecc9217fdffcb22a038
7. left 029c53b7280c49a7e80f42a30ba81ca02a15ca01f451bc443f373fc7203cfe50
8. left 003770e831db596e0f4c79627ceddb7c6c2627c9be8b2313c48b660de732a548

Recorded content:

["tipsterland-huella-pick",1,1022537,25992,"2026-10-28T21:56:17Z","NBA","2026-10-28T23:00:00Z","1°cuarto","2.25","1"]

How to check without trusting us: the leaf is SHA-256(0x00 + content) and each step SHA-256(0x01 + left + right). If the path reaches the root and the .ots verifies with the official OpenTimestamps client (ots verify), the pick was recorded that day. This proves when it was published and that it wasn't touched; it says nothing about whether the pick is good.