Héctor Cabrera Llácer (born 9 March 1994), also known as Héctor Cabrera, is a Spanish Paralympic athlete who competes in mainly javelin throw and shot put and occasionally discus throw at internationa
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 0xb93a23e0d0d3f70381ece933e24d4431430b7651f4b53590a183c630c67dfd48. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b6920a1-dbdc-4087-b34e-6412f74968c6.json and https://artists.proofprofile.net/proofs/artist/6b6920a1-dbdc-4087-b34e-6412f74968c6.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 0x739608375683a7cdcf9be5f8c80aad38541accc1c69ff06183cd7d8446813f71. 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/USA560948789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52211583627b1ca2ba576927b5c39e58f1f9ba8bafd87fb9da1aa296ab7d7526. 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/USA561069097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6fcdbec890d15eefb37e2e2d2a391bf576d72ec0e85b62190d7941d19e0b6c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USA561069102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbfe00ea5194496b18dcbce6e19090fb13d566c508d4e5aa9d17f12eae9e2e9. 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/USA561069110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f615f4aae4fa4e4193251bef7e60da4dfde279183b6a06c2087c1e87d9674a7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMBZ91630373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178372b36c371913e4b7ef77df8a729b4d5b65dbafc732a385eb3c366a829d31. 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/QMBZ91630374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac25fe2f3bee30196623e5de9b3690f5a62d585a8d5e6507a9c62d56327fd6c. 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/USZZR0913203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92020e5b5188b686f791937ac539c1c710962c2918eea5e6b578d3f16aaa65d. 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/ES58A2001515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5d187372ce5945d14d5b066f94be8a3a36ecd17918bfd5d54080419e6ad9dd. 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/ES58A2001517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bfc8c7621305b147e5052d74865eabca02e5b62d1f3aeb6353c302ab53bcbc. 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/COA6W1801379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a60ce44913b0ecfacbb6c319256d4a9bd180694dfe77e3fb58664fc6688a22. 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/COA6W1801380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fd215a65debcb09de200eb5d5777b76e25e3b12504ba4d9a6d06e055d45117. 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/COA6W1801387.
El Llano Se Viste de Gala, El Poeta de la Cancion
Vintage World No. 119 - LP: El Poeta De La Canción
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a79c786fd063e282100cbb7ff18e60af63d38c685e0b8402317347f605bb6e. 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/QMFMG1526445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a171dedcd49ee2ab0adc187cef18221579f09f8d1ca7a3efb12f333b343e49c. 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/QMFMG1526450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ba7e31bc2b68a166158f01a98bd4e07d13d3d1b354a6be0ba23ece1f044dd1. 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/USA561432449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8f06e0d25241870f97ab086a21dac42100f3270c3bfb5318d83fa9dd77979c. 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/USA561432450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d783355489e1d239d96c5e0cc857a6ed16167b6b550240f2219fab5dd06535. 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/USA561432456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf750f70773dc4cf3efa51e54959937a1fea66daf8394e3857ce87e5ae2c319. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/US3Z41700919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4490467b3a26cd5f698881efa6d968f926a5c3b5b3905b9faa8a6fb10d3884ec. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/US3Z41700923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722a3fe85a52797e2288f9ff3c7fe5a5351672b015602473a6e31bd9b6704f3e. 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/US3Z41700924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536a4c1f7ac8c990db8b387f1ca85ca25ec14740197298a7b358c5b0072b2031. 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/US3Z41700930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbef7ff166a44dc9b63a5604a0888fa67991ece5aefdae5074f8c9c63a44fda0. 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/US3Z41700931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135f749ae27632b4d7aaabb9cba17725f87357a79308b026b4efbfd50acde3d1. 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/US3Z41700934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9cb47f8a268a13443bfab7e16d5baeb916c1d2c3b2c6c2bea747a1776c1aa1. 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/USA561405656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3546e81f5ed06e546fd1ac4d773a44bf5c3521ef32af814884c8854469a1009a. 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/USA561398766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e488034980efc6c47f11686d70d4d31f72cb9f1b402298859d36312116d68f. 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/QMDA71341892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24f8c7626b3d0d486aee022ddaa9770c4f3fb64cc44425bed6d4559a915f950. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US6R21226325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f56ebf4038e52aac531f6813c48dce19e295c046c8c38fe0a6b00acc4757794. 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/USA561358793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6aca9c2770abdc9419e2d9155adf8b7ae67e65c069644ec69902acee630de5. 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/QMFME2208373.