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 0x487ab011d8a7a425821669753b501dd5c9abaff930a2e20a489aefff623559ab. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7aaf466b-7560-4a00-8cf1-da17f27d455f.json and https://artists.proofprofile.net/proofs/artist/7aaf466b-7560-4a00-8cf1-da17f27d455f.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 0x426dc0f7daee63dd1a2f31071dc5118443421fd64978284bf3aaddbd9c28fdeb. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ARVL22300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5449cfcb8cf4e40bed16b9fd2831323c3e7bdd85ddb5dc7c49de02595c0e2e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARHXW2202549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fb7e07312a690e3f1af12ce985bf3fca3e9c4d3fb1ffe8e9dd0d904684fb3d. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ARVL22300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9751d05084719e27ec0fbae7152044659b1089821abdaada333e51f09c4da613. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARVL22300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c00fa526e3a5ef2430ec4138e4d150e8b0e3560be6ae1f481107795b5674437. 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/ARHXW2105675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a19a7e9c0d4c6761fc35df9c6b25b994fae3e3b40dd0015caf0c306602adc59. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ARVL22300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa009f77b3fa62a622a2e934f87ba32e80483de5476c1bf75bc1edcbf099d7481. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ARVL22300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16e5c3dcf573be7b5627b19e92def2b6909c226e81827ce318b522799a229da. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ARVL22300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8132b81186f1c6191789f177f2b57face764dbdc76b6cba9cb208b1808262010. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ARHXW2201254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d4723c1325db440de12289df251a7906a46d0cafb650d4394aea6b453a4f7d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ARVL22300007.