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 10/13/2026 at 11:07 PM, included in the fingerprint of 10/13/2026.

Pick: #1013612Paid
Tipster: Mich F1 (@MichF1Insider)
Selection: Hidden: this is an unsettled paid pick. The fingerprint stores its hash; it can be checked once it settles.
Fingerprint of 10/13/2026: 77513d56 4616eef4 baa5c499 e6542aac 55844484 651ecd11 68c8a07b d0950e7d
Pick leaf: 2345ea96 7dd38b46 c68f3556 225e664a 470b8238 ab82f86a 464110c9 35bc9ed9Position 570 of 583
Bitcoin seal: Sent to OpenTimestamps on 10/14/2026, 12:17 AM; Bitcoin confirmation takes a few hours. Download the .ots

Inclusion proof (8 steps)

1. left 1aa58f615a2def6470f65702c0b9484e12aefe84d76b9382def1495738b3a40b
2. right 291868381e21ffd294746a55218c12bce4f2cc12cbe99776f2c01a16ab80a589
3. right 91348407ca442c3a2a1b7d9ef2fba70c47eecb97394d264b7ceca0f2e4b5ead7
4. left f19fd185e51675ef33a71262f04c9e2003318822733061ce6915a343ade22338
5. left e4c61b01e5dd01e2f96add325618b38de03985e9a5c6cb531601cb069a5cf36a
6. left 6db44caf5c6131c3bbb94ae3b7baa92eb44f493e1218c46def587439b211fb3f
7. right 4a753ae87805c419f1b8e9c9eae3fd49bfd8beb818e315499554bc79a2bf8ddf
8. left f2f8e5ac51e85a9cdcd9bcc668cbd56f305906b20709ad37ac372e2a628ad591

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.