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 0xab564924326b5cd2b8ccd8ff902738bf18110f7ee0416c826f4e069ca07a6d6d. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccf73222-59a4-44fe-8754-818d9435b432.json and https://artists.proofprofile.net/proofs/artist/ccf73222-59a4-44fe-8754-818d9435b432.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 0xe684258d5ab176939c4b8e144c8a3c4f08fcb410a686c076d1df8a2e47d030a6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USCGJ2112858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa443399a09416310448d3ba1acce8da0e7638257746e2871a18c33bfad378da4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ES71G2204828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1561f4275bc65a6f9d245798b78901798991dd8535818e098a31833ff5c0cc20. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ES71G2212894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1a8435d15ba7bac3f5e41240e5694d901779afe964472e55522257f4d93814. 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/ES71G2212896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229d66166c01dd693edf160d5bbb98567ab2b9208bc718cc7165b6b5d0f038c3. 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/ES71G2212897.
El Invierno No Es Mi Culpa (Versión Remasterizada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0a4f92bca8bbabe8a55696ad453936da92bfcb1370065b72cb5dea9a30f922. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G2310939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d1283366542c1242e386f8cea5c88ae73a0525853dc38b59c5a4bd1dccaad1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES71G2407661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04eddf5bcb9414380f07efce3a7ce44eaae019471bae4be3e5f67ff288d4434. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:54:24Z), 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/QM6P42573854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acf5dda834b4a4bc3df62fd69e163abeaea335c5c82d9db3e4b40e8e038e728. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM6P42573855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47d57bb1fb1639d9729b1da5961a51891a1b0af3c10a01ad32fb29c4a965ff2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM6P42573856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28584fbe8c6b357aecd90a6ee158cb5c915a9664fd8278ba552d82ae79065a3. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QM6P42573857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd465b4163d87bb9280fc9f90b13c3e2dbf06514b06e8c2b12eb511b30200a64c. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QM6P42573858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fccba0aa87df53b2c1b2be80aaf71889db981dd43ca02aebd5d517443fddea. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QM6P42573859.