Dasahev López Saavedra (born July 27, 1990), better known as El Dasa, is a Mexican singer from Hermosillo, Sonora. El Dasa has been nominated for two Latin Grammy Awards. Early life and career At a
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 0x5c875af9b5d539aee55aeaf1b027a5519f6ff2894999cf433a11778f9c436e7a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c70af89c-923c-4b8b-a693-486cacb1ca59.json and https://artists.proofprofile.net/proofs/artist/c70af89c-923c-4b8b-a693-486cacb1ca59.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 0x497d3417a4706d7035b185761dc42b02c525bd38b96bc65a23d5860157eeb111. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MXUM71200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62fc291cd48de83e815fe7fda602fe2f55a6e0a95b1a3f6a2dd8144d451b4cd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/MXUM71200399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137627965eb48b1f77fbd9355abe4ed1c217618ba5508b21cb92ed7ba09f23a5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/MXUM71200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076c623141a8a4bea50d01ff89c68d04e0691d0aec20ebf33043dff70bb2b6f7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:54:28Z), 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/MXUM71200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351022f9bd4457f4d3058d2e086d6bbeb86183bbec4a9209e17a86e1ac128e0f. 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/MXUM71200396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88695b225fdfb4073d274099aaf2714a18b57012809965d39adc68ef59a070d8. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/MXUM71300436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d33fd338cb1ef3fde7213f3844b450243635d994170e545b659ec542532f012. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MXUM71400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623af6d7866362ce1178fb7a8b6514baa28e5db7ec08058e60d29db3faf54e9c. 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/MXUM71400266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2954a4291abe71047a5597e2a438abbb771ab287797c5f42c8114a44d196e34f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/MXUM71400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa314a68321e17934e44ccab0078be07ae8a39d8a4333785ea6bb9e3ff48b3fa9. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:39:03Z), 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/MXUM71501746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b10035ee20acf1d3e5430b2ed8ab8c87df268c658ab9938e8287b7d7a936d32. 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/MXUM71600542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe18997ec16b9ed7fdab5e4b534384afb65f3394e9a8e9d1fa53157b59f4792. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MXUM71700275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d703f1eed91cb6b74ac9fa73c62b5d931230cd6b4288c7cbcef8b897010161. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/MXUM71700274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae808f71e9fc46daaec7781a2026e1dfef1e3dc680e896dd9846798e2ed9d63. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:52:42Z), 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/MXUM71600543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6885c35c8573e1779df25d90904a4b7e0e56db17ef042e34bf407d98475085a6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/MXUM71701833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94be5c8360b8efd041c41276152a60f66b94fca78eb24bdc47cc93598a677243. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MXUM71602589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a2fc3dd8af79adf709973431bf35abc795f3b859dd37958b67741ac1c32151. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:12Z), 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/QZTV32595411.
Costumbres - En Vivo Desde El Auditorio Nacional
Cumbia Power... Desde El Auditorio Nacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c05e87f50d4567ad4948bf2e7a13090f5842b151062c95493c383a4e0ce4fd. 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/MXA332110247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3b540a3f9a416bb0b052adce2bc77da170e7c729bbf409688e0773326e7087. 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/MXUM71501806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef8730ea6319784f1ca1f692bca39356cc0a51b56e6e9f6794dbd0b34060f2b. 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/CAOA82100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07e85e565f9f77a979b198af215fd58226db06817eccecf614cd5e304a5417b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWDE2538005.