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 10/10/2026 at 06:11 PM, included in the fingerprint of 10/10/2026.

Pick: #1011477Paid
Tipster: MarcoF1 Picks (@MarcoF1)
Event: GP de Singapur - Clasificación
Selection: Llega a la Q2 - Albon · @3 · stake 0.25
Fingerprint of 10/10/2026: 79d35bad 38e0a402 eb08b690 a8d18b11 84ea9322 df648b95 679232e0 f137ffcd
Pick leaf: df7e333c e8d29441 0c72f526 9fcc9771 100a04f7 c07dda0a 640f2c9f 100ca619Position 538 of 737
Bitcoin seal: Anchored in Bitcoin block 970837. Download the .ots

Inclusion proof (9 steps)

1. left f89fb1ee0e757d3cfeda33a233b4f3c81487465399ceb081b394e7c8cc9493dd
2. right 80a338b43d4a4a74906980f511846e280654bae78e5ace91a6cc196e7c25023d
3. right 610089905828bdf9164271b2d7ead2a987d084d09a779bc68452d055cef838d1
4. left 4cdaa1570182be6bf91e508027561558c0538109e3bde7fed4d6d19c86e50e10
5. left 0dc4ce60d94a822c8625ecc9c9199a6c268f50dbd2b29acc453e01bc34ed474e
6. right eb2b06a285739b17bc4276e9f73920133bd89950a0908e7ab64cd53ad9d12b50
7. right 9e0e43aca25a087ecfff16ed0af310b772dfe5f6d110dd6848b723ff0dc6903c
8. right dd3961f832bbf052f7defb7d1fa5ecd7585ecedf4b8836661fd10204775b9845
9. left fc1c00aea746c01615b4a344de30f8f15083bb4c6dccb9eb41e359d726d06d4d

Recorded content:

["tipsterland-huella-pick",1,1011477,72,"2026-10-10T16:11:46Z","GP de Singapur - Clasificación","2026-10-10T13:30:00Z","sha256:60dd235579fd6927700671309ad423deee8e0550064c74d517e267502f1f2a66","3","0.25"]

Selection nonce: 549c026ff3e6c4f125bc51848538cd72

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.