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 0x04605a44716de7d892458e1dfe02edbf89545153b2570ddcdcaba49c85a4ec07. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3fe32ad-32e6-47b3-a513-ba8505591ad9.json and https://artists.proofprofile.net/proofs/artist/c3fe32ad-32e6-47b3-a513-ba8505591ad9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonorísima Siguaray - La Auténtica - Amor Y Ritmo - 15 Éxitos
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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 0x3669d626e194c2e191e57026f6a4160824e1af79efffd6136f1cc51302971ef7. 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/MXF018100614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529be01e2631c91dc664f04acc0859261710753416f8db84eec32c4624d4e5e9. 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/MXF148100178.
Hay Música y Romance Con la Sonorísima Siguaray
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f7db0c7411ef16773c8b96004b5388ec9ed640ef2e43b585b9dce9dd202161. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:07:34Z), 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/MXF018200965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc381bb881a1364e0db0cd5bf1339edb3bf612337eda26bfbaa12722737973fe5. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:10:42Z), 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/QM6DC1571728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc23eaabc7d720556b5f1bc76b44719bc5927f25af76e84a1be0ead3e62787a. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/US9CY1700828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd8ef85f80dbbf4a08ad78cfe928a8ecde4be7b8e96d2f063520cd0f05efc3a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US9CY1700834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2185a5d02828e75eec50c6c4b736a480462193553725e2e992fd09fd3ad3968. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/US9CY1700836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145ab8a10fcc8ca5c6aa656d9c387b23232d4bfcf3ee337013ffbbe8fe1a2d94. 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/US9CY1700837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfa6be6f063672c933680848a7b2b40f727e27b6782be6af72e9fe0f20f2819. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:45Z), 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/US9CY1700838.
Super Exitos de la Internacional Sonorisima Siguaray
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1f528a66ee86913bfb4ef5c99121ac76efe570e2e35fe96300deef073d4b02. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:26:47Z), 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/QM6DC1873103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50bf5f390d59b37dc82e1813063a867305790adf25c2b5d16cf6c7f00f73273. 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/QM6DC1873112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddf71fb362a5bbda273493584d0b0ad99c20c488d64738d533a440b10f564de. 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/QM6DC1873116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1884afc6c402b9621c6d52f0e700249d558b7185d3d4687dfc70a4da9240bd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:09Z), 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/QM6DC1873115.