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 0x4dd7fd59c5851762792964cb5e616559e2ef34aae76c789d64bf7ebd6d5f2410. 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/3d9bdb28-67b2-49d2-924e-4cabeece38f3.json and https://artists.proofprofile.net/proofs/artist/3d9bdb28-67b2-49d2-924e-4cabeece38f3.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 0x9295ee8fd9d26a63c0b6ed012eff26c3343d58d4219152866d5c3ea8ff221a8b. 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/US3B90600018.
No Le Temas A Él (feat. Héctor "El Father" & Tito "El Bambino")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9921dea05036484255a61051c4524a6170bcc079081f459131a2b606ee3220ae. 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/COA6W1800558.
Roc La Familia & Hector Bambino "EL FATHER" Present Los Rompe Discotekas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75b7dbcbcfc0dc1b2a192a87b7827479d23d0442d8f510e11a31330e7757070. 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/USUM70603927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2c7de8d41c23a0af39d2354ca68e0a0aa7e4118fac5d9dd1d8dc6bd609d813. 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/USUM70505048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7529cdff94181fa91b3540d9e58927f403bbe4c88db713645d86bf0af1d10c9d. 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/US3B90600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2947fe995d74c58ee1a240358300458177ac1053fdcc510c9bd350d5afc6c685. 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/COA6W1800565.
Esta Noche De Travesuras (feat. Hector "El Father")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426448ff52914dbc5a385acebd58ff964efb573967f17e90447df2ed2fce4faa. 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/USDXS1600042.
Vamos de Nuevo (feat. Hector 'El Father' & Yomo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8110327225cd54c16389d907cfbb82440652cd5648bd4ec02c29e5db9a557f. 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/USSD10604031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220c4099337fcc50d062a7af68a4a6eebecf94b75737c3c8037cd83f00a208ba. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USUM70763457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7529cdff94181fa91b3540d9e58927f403bbe4c88db713645d86bf0af1d10c9d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US3B90600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9295ee8fd9d26a63c0b6ed012eff26c3343d58d4219152866d5c3ea8ff221a8b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US3B90600018.
Hello Mama Chosen Few (Remix) [feat. Jenny La Sexy Voz, Jim Jones & Yomo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a8764ba99d58e86165e1536ae18968c6840b18254b91d57641efb0c06c9a8b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USASN1301057.
Corre Píllala (feat. Jomar & Héctor "El Father")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e284b4c0aacb25e1c38e1678a1b49767349aa7cf13db2685be41605b0b49787. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/COA6W1800560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e922446566968ea99360329a61828678fca86b91b0e1d216c672c423954401b. 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/COA6W1800561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd0cd16353b5c8ece822953eceecc96a8d16981b6f84dc8a8baddfe62ab831f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42304651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fd5c0966b42f1982648e1089cfeb7388689307457c9cf2508761c3b37c7ef4. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USUM70763454.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch