Gemma Humet Alsius (born 19 November 1988 in Terrassa, Catalonia) is a Catalan singer and pianist who performs in the Catalan language. She is the niece of singer Joan Baptista Humet and first cousin
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 0xe3168fa4ee73cb353133484e7ccccb98dc20956ee638c42eb343a5403e22951f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fddab49-aa4d-4a3c-9e97-9c4352a54fb9.json and https://artists.proofprofile.net/proofs/artist/4fddab49-aa4d-4a3c-9e97-9c4352a54fb9.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 0x9b0b03169fecb1148250ca080d37bc93dfb394537a9f9afbaf087bfa962b65de. 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/ES6101824203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8a6a84f5b21c08716906da00b2bfef6152fa0a5a49e17f7763d0ad31a8349e. 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/ES6101824212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989829c79ae3abe07ff7af688c692a4ca7e78eee58006c12ecba081f64da29e2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:42:07Z), 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/ES6101824201.
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 0x3b619922ef469293832b4c5bf304102d910d8d677f21939967f42f85556ab777. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES6101824202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b3e208bc6c675e93f04c678666553b88f297821acaca084368411c9087ef9b. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ES6101824204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6459ab2ea133fb5a88401b299a5a1f6a758470631445fdaca15e1cf87788f5c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ES6101824205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c10bdeece33fa7bebc587fb3833552a897988c757aa3d53a282d0e8502f2737. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ES6101824206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd59fbaffe3f6bca57f409e62d95c50608bf3c0904b06e083fa2ef25ca6fbdb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES6101824207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953d79c7e9e7c6e02fdeca2f440ca4db5be64f01f106eb0654901244ee981956. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES6101824211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec23f7dda50aadcd29bfaffaedebf53150348e249d39364ee57aef8789f8a0d3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES6101824217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1686109de6b0698f9028c9e279081608f8c16a90909ec253c0c13b5e49672607. 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/ES6102225808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16753c2380980752fdad9cc8fd2be2f5cd0ed1928c0bb6916f78da9f30f23688. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES6102225801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24ef6fa17c5a2f0556010269cd3e6f89152698f0377a5280ee0eabfe681c08c. 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/ES6102021202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446eefdabfc27ef5fd25c293f294188af69bcc70af663a6da90c814783a44655. 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/ES6102021203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7f3d3613e8449500d2496338d30df070a100559300188c74d0de172217a82c. 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/ES6102021206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae81b8b7ec7ff9fa00264dc26bd8ba25f74ac11c70bcadea954a718d7b175e71. 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/ES6102021209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef5313a1f0df2c930cfda0b77e817da3e6029e94035bd2f284e19c86a0b4c34. 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/ES6102021210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5f37f9d5ef83225f88ff62317841a471038cd18756d27f77ab5baa173284cd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES6102021201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149cd981096b5dc3ad6a1ebb4f3b7d75b759497362683ae799fe3f35477e2d35. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES6102021204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59486e72c14e3df719369c9b37d94b58adb48dbbddaa7b280795dea73627da6. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES6102021207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15247259c50af5b3f7082429f75d889a4b1316c0ada818c46a99b61599e31f79. 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/ES6101720701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dafaeb8197259ecc8ed06f58ce971158c135e615d582f3881502d4b4602c1b8. 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/ES6101720702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5b969b590c91be45d7e3c99d216138bb29d9bc8a94034cd1e9dcc32308fdc9. 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/ES6101720704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567771e40faf7fe193e89a8df103ad2efdf5b71f0ca340019943f7aac9a88cd8. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ES6101720703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acbda68d9525dd5c8410e1308c555b49a79091cacfe5a8168bd8165b69c3ded. 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/ES6101525502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4ce49588bf6ebcea58a202db5b5355192c7a44db7bfb67b2e82e6eadd2ed17. 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/ES6101525503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601fcfa7866bfffd609fdd51b6321ee671a8fb2456a97cf03a227753ecf0953f. 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/ES6101525509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4742acac3588a5ea64093376ad033439c116e5d24d72f23bbaff22ad9b3aa8. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ES6101525511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bad6aa283a635b6330f7eaf99c2ab7bbcf1e9dff9959925ccac07fb43d1eda. 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/ES8241920704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a16425520e690aa8121a0721f63e3cda5da003c73be88986860326600838ce. 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/ES6102220605.