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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2986852f1b14ed757050ce1b232c6cd09a13831cba163e029f12ecd364d0d493. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c0079b0-8412-4ca7-a66a-cedf279a8f83.json and https://artists.proofprofile.net/proofs/artist/5c0079b0-8412-4ca7-a66a-cedf279a8f83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
KOGI SESSIONS, Vol. 1 (Cumbiana Remixes)
El Hilo (feat. Elkin Robinson & Kombilesa Mí) - KOGIMAN Remix
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedca711afcd50686d70e315832e888cc4cc52db2f83c95d81b82e5ad19ea461e. 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/USSD12100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfb0f4b46c542c6943bccb4843b035d9aac6ebad157030deeb681f56ad166d8. 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/USSD12100126.
Los Consejos del Difunto - Papá Kumbé Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8251202971d0772db92c19ab67aa95e2fb6651804fae1a85253ce86689ab06c5. 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/USSD12100129.
Los Consejos del Difunto - El Búho Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccc6bcd507fd35882164a557beff26a9e43a81dd6dc60598424d58789107d43. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USSD12100133.
El Hilo (feat. Elkin Robinson, Wisin & Los Legendarios) - La Base Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14334b818d817c9a325c54c648e432c1e38f0df9865cb339ac478cad55201fe9. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/USSD12100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11451e21c2518674a40d34d0576d449eed363a9d60ae55b1a0b2ceb4527e57e5. 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/USSD12000470.
Hechicera (feat. Papá Kumbé) - Papá Kumbé Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964b94f21abd85914b6d9dffea0220025badeef15a7841ac4dc84dc70b1d2c58. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USSD12100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465e14c993da512bd8904507c30faad58d2f15fcdc8f8a9b8cbc549d34fa6aa4. 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/CA5KR2465981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b7e233655089fd3d563b2e7e49870963d74978a041b2144bf8419d80010f0e. 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/CA5KR2438306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaba7724c2c8e4eea5000c5e34f8b6c544b208d5a486a17f359f0fd8820814b8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZG2X2403428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06efae1d80c9052ae740d787fdab96fd862b9024e0e20bf521e907b5eb4a7783. 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/QZG2X2401592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ecbe8bd047853339b3f4ce7f35f75e549e54dffd282f09e95e091ec4fc48e9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA5KR2438021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea6aabf0ace40b291c49b4e705ecf96201de3a428acd050e10361480b79a435. 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/USHM92161369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfe7b2ccc4cb0a89cb259a2d2c2ea67aaf2a0ba35d945b9524f8e4c4df4d4d4. 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/QZHZ51991206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed1f31a099f0033053c991fc85a52e6b0b90942ccfcbb50f36ace55fb46b57b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZGLM1985329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d93bd6f8251449f827af277954020325e406b35bc000acf9ed0944672d24f6e. 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/ES7001934501.
Los Bailotazos del Cucho, Vol. 1 (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe20d9b24fe75bf10455dd4ca50bf543c7fd296bed07257d939c8477fed77b70. 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/US7VG1854531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb5e1f2521e98eac2f866d51f38c2a612f75cabb3592c796a574da4f8aeba4a. 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/QZ5AB2019181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145ea856dc7c138991a9edc5b1ee5efb32d7d001dac2e1967353fc608cf3117f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5AB1966664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe170cca39a9ddb4c0f6786c0cd7ab1f891c21790e40823f94fccc0a959d1298a. 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/COSO11800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51420d53618b4ca270c67502a8b68e5b02b7ae875f6b7dd351e8894a28e9fc88. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/COSO11700220.
Matiela Suto (Colombian Singles Series, Vol. 2, Part 2)