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 10/19/2026 at 10:30 PM, included in the fingerprint of 10/19/2026.

Pick: #1017406Paid
Tipster: Ferrox (@Ferrox)
Event: Adam Linek - Bartosz Sulkowski
Selection: A. Linek · @1.76 · stake 0.5
Fingerprint of 10/19/2026: 8f52464c c60bc515 726ce1f2 0d1f31d1 6054e493 3ad1de21 f6f29d7b c9f4684e
Pick leaf: 81dabdbe 0bd9f06c e2bf097f 5988643a e2cdcee1 869c1df8 6246219c 1f97a457Position 590 of 626
Bitcoin seal: Anchored in Bitcoin block 972220. Download the .ots

Inclusion proof (8 steps)

1. left 2c797b7a2c538369b3d658f0fe17edab417145a771d4ee023d8570564c1877ed
2. right d8017fb3b5a416305690ee77168af78a5a816b472599a4ccae6ec170dd5adde4
3. left 8fd16ff37cf743a2417d95ce77c636881e1eaf9419e2b2ffac66000183833f5f
4. left 390814d7f094a770d06df0c8ee94c1c3b938ab34fc3ff8c164676e335e236048
5. right eb3199056d1093ca236d77b874d107d359b01bd09afa843d4b0c252c1c72e878
6. right e46e82b2d1c7e1db557ac9e8ef2df8c90776f8abe552cfa243a7ee0025c71137
7. left e092ab5669c6c455803f150e95840b8bcf12435df12d4770da15f180c8cb1220
8. left 4782a298c39a0162f06cfcd0d8609ce78e0f1140ba4ce015eea9d0ef528b16e5

Recorded content:

["tipsterland-huella-pick",1,1017406,19219,"2026-10-19T20:30:22Z","Adam Linek - Bartosz Sulkowski","2026-10-19T22:10:00Z","sha256:e44dbaf43ee10c22cf788feecd33da3fad54d4338c08c1ddb3d40688fc6b3fa1","1.76","0.5"]

Selection nonce: 734534edbf5eb916fe077b5432644af6

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.