Juan Manuel Requena (born 24 January 1999) is an Argentine professional footballer who plays as a midfielder for Chilean club Unión La Calera. Club career Requena played for the youth systems of All
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07a3c4e98f9b6b22463bedf5071d91a2faa7ea8c14a83d656a45d6b14560fbf. Chain 2 (Bitcoin): anchored in block 954013 (2026-06-16T22:27:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34f8c960-c4d2-4be1-b621-6806f63b28c4.json and https://artists.proofprofile.net/proofs/artist/34f8c960-c4d2-4be1-b621-6806f63b28c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a53b10071dbcfbbc9dbcdba5a3f61f96dd991906de19549ef6c63ea9860435. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92095419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d9b09d198d7d701ec494ebd7dffb24d556e6a0105b9dbdc2cb28eacf48e057. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92094006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770e980c49294d9c86652edd204689d05d41c5ec320483d867a65d43bc6e8484. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2283839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855c284b67bd354e1ea066e3b65a6314167e3aa1b132492a31641a014de6ceb0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2283840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c9e191f616d4fb5e72b678b106b75925c42271289fcdb4a35fa7b64cd80915. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2283842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f622c6faf4dc6a658e08cd8a4e2d287a8be2b23642441711c08cc2da9a83ca8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2283844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf710afd921775ad7ee3244b012e956a52c3b2dd317461f80d73e173754d3c529. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2283846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb01df8444931819356544010eb4afbf79b78aa39d405de0deb0d7bbf970cb5b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2283843.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b54785bee523be427ad3f891af130189ae32329bd64ada7e5771e701bd57ae. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7731202027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c5f5e8b9be6ab65c4eae67868897ed3fe046d42cc1dd07e6778694e0d94d3b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7731202031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd437e29024e010b1cc6a73905ed3859c5ee4a34d1dd79534197eaf0b17df7abd. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7731202030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabc7910104764284424b19bc8d9fcad157ec884c3ac8ba55096f990f81c3578. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2339620.
Haciendo por olvidarte (Malagueña y Verdial)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e294f227c3df69a0496842af2bee894310e3911c332001dab00e6608f174ee5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2339621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568f60d05d65aee28efdf8547369fa990cf60c4f0b5fafb2701e6d7d214d8153. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:10:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2339622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74150ea301d3ac9d64db2bea1d51e216cd9969c80cd4eb4f31f59b6afaa52ed1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2339623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4217b3c8bcf22d36e9e3c31207a0d43cf85802944f50342004060c696dd7998b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2339626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9117aeaede5a995a7ca6b126b032c0ebc0f1c8d8c74cc06ba6992409ace787. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2339625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a1862c2aa1e6ff05f34f1870c76d0e5f0c36019b6228a616f9321384d38e71. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2339628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f90eb4145f4674ddf81ccf7d5dc3d17ce443677dc988cd7e9f8f42a6be6199. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5302373467.
Learn Flamenco. Sing, Play And Dance Farruca And Seguiriya. Lesson 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d749d4a15bfcab9f0ee660ceb337398fe7ae1589355cf83ce24b6df21ff3dd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5302374205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e4c1a0c0319a82819ae8db8c9f4a7c84fa27b108c7298af4074c1b26fcec12. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA72470177.