David Cavazos (born April 19, 1985, in Monterrey, Nuevo León) is a Mexican singer-songwriter. David Cavazos began composing music at the age of eighteen and later signed with Warner Music Mexico, mus
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 0xa7fd45dacef207d8bcbd755bf624179c544d2f6ea70bd0a9bf6e438b6ad12126. 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/2c2640ee-a5ab-4364-b7ee-953085d8cc6b.json and https://artists.proofprofile.net/proofs/artist/2c2640ee-a5ab-4364-b7ee-953085d8cc6b.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 0x7da6df8e17626b0aa11a857aa7c9f67c8644b1a2f15fe497c73629b9fe98e620. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/MXF150700684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8559ee4394f5bb0f001baf0bf9420beb2a08904c172e32f424c50e0f16734fa. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/MXF150700687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3856406708cc1535e550593e894f6a8b7585d9862d4c70918b29e5224f1016b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MXF150700688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04960eea54215c73bd90b42d860d57a24fe76dffbfb572ba5517699ebac3d2c. 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/MXF150900360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073ec7a010e6e306d8c9e1fb74d65e3d62d8a2616345738a7dac631cf6412974. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:05Z), 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/MXF150900361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebca011e25235bdfbd161c38d130793c7c2b525602c3dc89c54e9a5dc3309efc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:25Z), 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/MXF150900363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e71fbaa858b0c972764ff21d52947c8bbe73207affc3d67c327d70fbe07394. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/MXF150900364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae592ccbfa7e59596d70a8d67d3701dfb47d08136800fce847751e5965098ed7. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/MXF150900365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30c487433ab2d68afcc3e40419c641625fdbec06e33baf1b47fb516180146a7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:04:52Z), 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/MXF150900366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525dc6c196f6f307b6dd10ac243f88bef6ca6e5776e7c3cd4779ab56ae370ebf. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/MXF150900368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc004a4f41bdd4293738025175c7f1fa43f4336affdaab2660645544a2f32063b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MXF150600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933cfe4d36d693df8623ba041aa6742c1016f8ef44bb674a3a57820e61e030ec. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MXF151000406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfc0ee02cf6e29593c1af319d9a6fd13cd37eab37571c2bc3a8a8240eb0b720. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/MX2521400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df3df83f13c9de3b60dd3b2f19ce8f0756c9db66208446fa6214e57db3ec1b2. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/MX2521400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d25559bbd0362764de3c069a4bf91517d5be8d041475d4480d9a4015fb76f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:41Z), 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/MX2521400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706534c7d655cdcbabffa4c000c0845b0fa7fa06dc4ae089cc9ac1e4cf167f66. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:31:13Z), 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/MX2521400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe701b2773a7719ab1e309441a8e77d07205b871e1cf898f6d21b6b0c37891d57. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MXF151000403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f09f31dc0051ddc93356cba14c91441222ca31bb99b2e7ec12547ebda9999f2. 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/MXF151000405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92374fe4f6b9d5a529daa4839abfb4b5babfa9ab855d93903fc303f0edda6074. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MXF151000409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbe7abc543ccea84f147971fc2615c278a9a528da79501c5da914ebfa33fdc2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MXF151000400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65875df98e4d9d9b2e84ea9504115ea5270d65f25c5b9e5dfa334957a4575eb2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:44:54Z), 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/MXF151000410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03613bc8a9b6eda0f48a5c2d02451e839033a3878fadd2c3a41ad46d6f52a84a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MXF151000411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea596d6d922ffb3e8389f38f6621cc576b4a71a9e6b7b13e14ecec1d7241993. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/MXF151000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a8bf3c60eac20ec65c9d17ed557d841ac06af94bffb781acf27c8b3b47ad1a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/MXA571500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31219abb421206b738360ac90f127256527ea4d990165bd69225524e0af1b4bc. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/MXA571500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075c73d7c660e10fa2a6b35e3f83036a4ceab050ecf01227225b551906ac99cb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:48:21Z), 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/MXA571500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d98eb6714ced2aff907d367e5de2ef9a6f5923383a50ab3fb5a08e8da4c9a5b. 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/MXA571500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf949f4727c43efc7504744abfbb3a035e942c488b00e1963b391c82ef67d1a8d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:32Z), 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/MXA571500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb776f9f15709673f6d5a31a981ec7a65aa1f9b2ee69419289fe5b58e624e9ab1. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/MXA571500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3771d4407a2ee054940e6815504bf9c5ad70c52a20e5760be12dd863ebcfe889. 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/MXA571500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b81386b96a087bbf9727db57809a22d2ecb374b44d15c21fefae6d67908b9b4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MXA571500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc523ae8d16a1ba67956b0ab56f4070fd35570447bfe6585537bbf4b112fc7df9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/MXA571500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f111de0d33ee61db686315a5e966474b6aa15e86e9f3b420a2c9effe0530f9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/MXA571500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53eef992091e0ed387888662dd85c2c79b9a64e7d7086fb290036ab436f3bf62. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/MXA571900022.
RoManza a Dos Pianos: El Último Disco Del Maestro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94655833c0ea6d394d75315ece4688bea3554ec4589f7a0a377cf6074e84301a. 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/QM4TX2195414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768aa883ec089bb510d19a7905839d4b0143d616afa76ec0ec83158498aebd38. 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/QZGLM2377650.