Cruz is primarily a surname, but is also used as a first name mainly in the US and the UK. It is of Iberian origin, first found in Castile, Spain, and later spread throughout the territories of the fo
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 0x1573e7310b7f8c589b2059188d03345365ba9b56bbc60e9565c0f4f78223ecee. 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/f8b6ab55-e745-4148-a1f9-e11f1a6a4d02.json and https://artists.proofprofile.net/proofs/artist/f8b6ab55-e745-4148-a1f9-e11f1a6a4d02.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 0x86636a5400b084f1145b4a935eab4866894e5adb492780046ddf6e4b4ec53b6c. 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/US83Z2110317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82c81317a21d3aea9d4603ba93b4d01891cf2a5d2e4d32d5cd0163698769114. 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/US83Z2213394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eb53d10f0f7f650e01721cf076620857718709c2a60459e18351347b9bfd38. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US83Z2225781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca8f0b63e5a3d416b0f72f6fc1eb538f7f23190e8753c3cb7d6f63dc03f6fff. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/US83Z2300591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034c378fd5be93c1b28d8e5ba168add52ac7bfac28f8b0351ea8cf9c441a5d89. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:06:16Z), 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/US83Z2301348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821614ee65bcfcf715d46dc4c656c44033f9d3c157b73b067f0ce807d25db313. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/US83Z2318926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b39ac0aea90fe603bf7a2a8b5377ce026dfe4e27f5804de09b607753e82f3f7. 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/US83Z2476157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bfc6a57644027ac2f9947d059508476e82ef647051cc784d591f8d879d948a. 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/US83Z2428048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672f95206b3c6cf5e1aeb148c2e024ad0e37e12cf2c0268c2e7a9dccaaef2b0f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US83Z2428049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6513fdf68a0eba170b53c3e05e815a3419a801c7d615e8bc09cc40ec4507b24a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US83Z2503046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dade291dd4fae388e8121d9ed95cb3c5134738a878199179133196f48b3cceb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US83Z2429650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ea92cae185ce30d87a8ff0f1aca2611a77b8abee2832b9bb76705605428958. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/US83Z2429651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8b2fbcbfc73b81a0c72063f351cc24a70e1cd9cb268a0a809143d26d91fecd. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US83Z2509329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8218b0850c44ffb28e725fbff0533a374e0251285761ad3985efcf9a9f0ba1. 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/US83Z2428289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88068de2c7964659a3c3a76d35c4fbe0a572bcd49514bd646cfb0ad6e79997b0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US83Z2515142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63e578dcb4e2c2de39d719bbf3bf238f9c4d099ce1805f3a9e25541528f4597. 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/AZXLD2500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0deea144b8bbd085d88f0e1b30513f0ee421170269b20be7511a89ebf6f67ae2. 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/US83Z2429660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad00d8f62991e1d0d23d2c51eaf79b82ab280a9e223f8217b7cce9052b9a401. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/US83Z2429662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157fb16ffc8919e3e1eebdfa23c8639dd5db4a3aab8519b8eb71d39780baa7e1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/US83Z2525939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c715826aa81105cc1a0ea043c7ab5a3966705832c39241df8767ab46fe0f61f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US83Z2529035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe582f953f5d8a0240abdee3159d3940412850ef290095e8fec1ef3a386d61032. 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/US83Z2429665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a929e7530bde0eacfe12ec2959371b6f34aff24afeba798bb339e898e94311c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:52:05Z), 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/DEPI82513041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4735c66bcfd30dd850fcfbe77d08aacbe7d54ec5b9e39bc6ea4368cfd296d7b5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:51:45Z), 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/RUAGT2523963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcf780a470e9f03939a01a2f45300a1abc7d63a9eaaa9b99fa8d6ed6164cd09. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/US83Z2429675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e342ae2eecac2a7584b4d75b6787a037c897771e4567bbf45cba45a574745e. 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/US83Z2500633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e884b5cfd01f8c958276d668bc2589c912f138f3dc64f79170f545c209c821. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEPI82522559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4092e29c8772871133adcffd4ba74af1f2b1957402ad8ffe93081caaf304f7. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:33:56Z), 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/DEPI82522560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ad84b372c039236d10397a860cad0387825ef6999bd56a558920ba291da910. 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/DEPI82522562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4970c7ae4dace4eb22bef5297293d0e6e8962c664aa25d71ccd3227010731f4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US83Z2500639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fb2bfd08e5ff9881d9a6cdbf5f629ca44327e43536d88a6e7c29f41714d3f8. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:13Z), 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/DEPI82522612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796127c27ee07e3b7d6602c47704689f255829ac6ea38e0ef0768b42dab8126d. 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/DEPI82522616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb185d5b3d67b76c58bb0e3e4458f9a4a423a224792650e42bc324d587eb2596e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US83Z2500640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf686d91730afeddb7b801b2bc99b27431e0d0cd78e4c67ed1d08aa64b579791b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US83Z2553494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef6793a0af07eaabefa53c6b7674ac1a4de5f9ed7b07b2409e9b44d51559c33. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/US83Z2500641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac6fd0d8c100286d41f01911ba2a2b721af56ad8dd0044fc48038b2fd0c0c0c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DE1QW2501700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259490b3763428db0657ee9c6743e155afb853a57a499eaf5f7686aa5f06be59. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:55Z), 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/DE1QW2501704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5168d6e40ebf9f7feae022d8f1bc2c5882e4f0df431df5ed66ea62f167b77a71. 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/US83Z2501503.