María Natalia Lafourcade Silva (; born 26 February 1984) is a Mexican singer. Her music combines elements of pop rock, jazz, and folk, characterized by poetic lyrics and her distinctive lyric soprano
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 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 0x3e0dc7ee491d5465acce46a83cfbe6fcc5420c0f6ca838639891a4b734007b3b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/414f2ed3-0a53-4784-88d9-9cc6e3fefcc7.json and https://artists.proofprofile.net/proofs/artist/414f2ed3-0a53-4784-88d9-9cc6e3fefcc7.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 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 0x65179d12f65ef78eead14065f183f8ef822f80256e759f6b182ce0bf56f679dd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXF012100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034967224d9716f1d4f42dc32335e7e9e2799e14a1b33305e1fa215804efe38b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXF011400582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aef0468be536f1592aa80972e7902f149d5df0de191f82b0f4ca0c0558500cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMEU32211372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb90ed2cd2cb71f817856c30b8167a4dff62459f3dc3e3df540ee0c08368d0d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXF012100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7db6ef0d3b9ea89c73dabd17e71be27f9d874e1e1157fb55cc6ac9bd732b29b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX1721600892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1399dc14f3ec3b21d8a2f48544dc5e0b220ac5bf3be2cdbacbdc3cde00ffb86. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5022000863.
Salvavidas de hielo (feat. Natalia Lafourcade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb7584aa1c15df318fa700770d26b9d237148bd4cb26a293c571c350097081b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5151701241.
Los Dúo - Colección Completa (Vol. 1 + Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8a90e6bce78a90ca01ed302225dab1330e7530cfccdfda9282eff3a7554998. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXUM71401764.
Bimexicano, Nuestros Clásicos Hechos Rock
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb040df8725523100882e9398ee8a78be0b4342efbe9015e53312420532adfbf7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX1721000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97ce92b9cc32d5a8ff648eb5d8b5079c496ae7193a36a52253d827b64669362. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXF010900131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8882b573097b67acc29feb8183d0cc10c3cc96e23710824888d245868edca038. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF011100472.
Remember Me (Dúo) - From "Coco" / Steerner Remix
Remember Me (Dúo) [From "Coco" / Steerner Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59306b19055b33c797304b324e8c7e3a8c13ee2a385805746f2b748b4753ae00. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWD11885495.
Día de Suerte (feat. Natalia Lafourcade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8443f87e7d2dd5b1fad4066e13fb09d482e443170082e42af1cec2b9c55da26. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF140400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4aa95666cefb04a9eb70dfee5f9164c79425e6e31c5ce6749b756621280e061. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSD11900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11042cc8f9e2b9642a72199d2c168312660ada16099bbba8649db442066db243. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX1721400530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0654bb7479bf554826a48f52e1b5aa86a6753a452843a52d8987ecd4bcf5a28. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MX3741700773.