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 0x998b4537306f75d0a7e07fdb5099693dea42beddcf6302b5559f4193ccdbaadd. 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/396f9e79-3090-45de-8392-465a4ab4a945.json and https://artists.proofprofile.net/proofs/artist/396f9e79-3090-45de-8392-465a4ab4a945.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 0xd7d3a9b8d2c5c8db2123d452bdf796da1ef3b509a025832d296e65f4a4eca3ad. 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/QZ7R42250188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213d1ef66a601eb43ea81c6b8734b3d50891410e900fc2ce68bb2bf2e7420cbb. 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/USDXS2303774.
Sinfonico Presenta: Me Compré un Full (Freestyle Mania Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc11352a282abac67742a903a77d80607ef987baa5097af2eaa1832980233faf. 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/BK4DA2312843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcdf002292f0cb14193a69be85dcdf41683bcb43d8fc771ebb03b5539a18a20. 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/QM4TW2385129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125b5728d7d79ce226bc56b89588f6bb132b3145c4e3247756f016268afa377f. 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/QZ7R42251598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5c3bd29a3faf8f046a5ee7fd127f91bcf728134c9d9e9f75ca4d93df8448b3. 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/BK4DA2410992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb4af81e47217bd94e46d0999b8801299684d2266137591600bbf029585318f. 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/BK4DA2418881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512c52e93e51a3df6d39bbd3e04797c364b298186eef3f3e0c9a9e764254311b. 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/BK4DA2407489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742ee07dddc4cfd7da9d603f943781a7900eaef4079560198cb4dd4a72af0e7d. 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/QMFMG2356043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc11352a282abac67742a903a77d80607ef987baa5097af2eaa1832980233faf. 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/BK4DA2312843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478694a1e7a427e7a7093390519aba6cb949f68e4cbd32464cfe0d735f4c1891. 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/QZ7R42352044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d1b2769eedc85a15812cc19ef5570484f50bf2992f60a345d7055dac5233a. 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/QZ7R42251515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce0367bc0edbb652de6883e03b84f5e2b6fcaa09fb5430214c6f571201594f1. 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/QZ7R42251096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ef70bbc91dcecaca0b7fe7f0c1e4d1b8049419c58f5734546ef850aa1c76b9. 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/QZ7R42250255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadf05f3372e716d846ebbbc8557eb487f9241a5c256ce7aaeb78fcdfdb37dbe. 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/QZGLM2530902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc277ba5bb35df2a2888139673be0d163b302d4358fcd60beb3e473cdb3075434. 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/US7VG2553803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b6d2c6537f3ed5c9bf76f74d1eddea665b7566288933704e35327c978cefd9. 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/QZWV32434615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d43c1ada8b5e0bb76b16273e58ce81c6315a6a30c173216f528310081e7d22d. 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/QZ7R42351902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63f16a91ea81b27cf7662ed9f8dd1c736a21fbbb56d21a6e99a8424663cfc85. 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/TCAGJ2282124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac0a983d1c5f9d3d776f2beadf9d4d63103c32907fa7f4dc36778ed58db0e4d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZ7R41952409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed87f307e0d9e32d1d3bc6a32a00ab73852909477b48e8aed21f0849e637370. 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/USDXS2202375.