María Fernanda Borunda Medina (Culiacán, Sinaloa; August 29, 1995), artistically known as Dalú, is a Mexican singer-songwriter and music producer. On February 23, 2020, she was the winner of the twelf
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 0x5f9f797c3ada2845eb0807955d0b81806885241ef951b27b269b3fbf4411754b. 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/6910f056-4656-43cc-8b61-66227630e4c5.json and https://artists.proofprofile.net/proofs/artist/6910f056-4656-43cc-8b61-66227630e4c5.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 0xd41bc115961601e7ecb91ff045f75db7bbea9e0bfb5fb051c3b21e94a995b538. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USL4R1807094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f4ed6dda72030a44026d7fe9db6245769d21a86a5223f571d767f39c8b4bda. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USL4R1807095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e44b1d061d5dc5548efab2019e73f1f21eef54ec03103acebc6cfbf0e70a3dd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4R1807097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206e8cb0b69dc7e4ae26a31519a6dc272557464850008e890495796b800c76a4. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/USL4R1807099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e8303056f3cf1b763fe94effa339918a28983b0092a4517539fa8bd0bc041b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM81923930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b0a620cc5910ff95dab875619d560a396dff4799aa70a52226d0b7c2bdc147. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM81994165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead629022d481ad7ceb73ed5e48f378443c4a3bba1edd293a6af3d10540413f5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBLFP2278481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe630354ea51f6c8d49f817de8d22200c7f894f899ba98aa4aa5d04013ef0c5a7. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/UKXN22050018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0befaaeafda2683757129a4258a8c9de17f960cd88b5d195aa69c421f4312e0. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/UKXN21990930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fe66f4d6ac2ae9fae688245f9ed77fa7f46d6654218e53c6d963e0db399dcd. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBLFP2104845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ee54d817088cb446a187d6807a1f552d2c423e839f91b25219cc88d895cbb3. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/UKXN22121076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652edb4ff9dea48ca9a50dd3450b02eee59130d35601fa8c8c825d67199a29cd. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/UKXN22121091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455d11cd96542bf048c7c25c8136c787e50b2e87a050b9e5101ff15303845372. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UKXN22121102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9262e20da75ce645a6b3841f75e3c576495b2b797d49f01ec2172f0f64291fdd. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/UKXN22121101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d61c5d6902706ecf9c75140c835d0d43e445765625ad8120859cc9411a0d1c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/UKXN22121087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae67283f114418ab2772baf859b949c2859e0c9c1f3cd3fa6d12066df464e5f8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKXN22121082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2407abe8248db127ed4d5aeff744590a7d45916baa3ee50bb848e1d2056fb88. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKXN22121080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ee54d817088cb446a187d6807a1f552d2c423e839f91b25219cc88d895cbb3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UKXN22121076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652edb4ff9dea48ca9a50dd3450b02eee59130d35601fa8c8c825d67199a29cd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/UKXN22121091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455d11cd96542bf048c7c25c8136c787e50b2e87a050b9e5101ff15303845372. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/UKXN22121102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb062efeb08ec995fc7f8fbdbd40c2eae9e49f7d4444671fef34a584175dfc411. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/UKXN22121108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a2e5e7a486be4b6c0d324782463ba28f91c35dce20325831b16f1af6f3e941. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22121106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbb7fafa8194d09eb43a540bb410cdcb77874d4fb414b12272638f2bdbb0cb6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/UKXN22121090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc19e6a4fb4e1ed4e06a3818bae593389d7ac1d333c9412d6c5496544c21d311. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/UKXN22121097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d61c5d6902706ecf9c75140c835d0d43e445765625ad8120859cc9411a0d1c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/UKXN22121087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a1e0c765589c34a1faf794c29a6800836921e4ecad19699607c59fc7fa8ce1. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/UKXN22121103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae67283f114418ab2772baf859b949c2859e0c9c1f3cd3fa6d12066df464e5f8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKXN22121082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5259d172c8fb8d0c26493b5d3d7f77ec3cb208bdc4d03803b9be87a46f2389c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKXN22121104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2407abe8248db127ed4d5aeff744590a7d45916baa3ee50bb848e1d2056fb88. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKXN22121080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feded42c0f74ac1ed176bdf681bfb3542aba1128d05251cd5ed22981acb0469. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/UKXN22121262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea6c311215a57c2ca42c65fbd96cafd9d35f0c568823ad3016fd1e9ec2e9fde. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/UKXN22121100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677079c76eff4d9a2ee691cf70b676f73f14e61102943414984415a1a905ffb7. 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/GX53U2371465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eff20476ad24ef823274cec52843ce3320681bfa9f282c9013d1077e4855adf. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GXF9Q2572953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eff20476ad24ef823274cec52843ce3320681bfa9f282c9013d1077e4855adf. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GXF9Q2572953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c19aef5f0800de5c70fbbfae131d45e783e6c1edea74d65ef8a292efa17a7c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX3Q92563751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1819c3363dcafa003bfb7c2207253ee4381d3dc0f30652dbeef6d592a3db6065. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX3Q92563744.