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 0x793e8819fccbb1f5e570d2e5dcd0245d824d7d71873b2b9f9eeacf0412b52e50. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/223d7f2a-d3ca-4eb1-a849-ebeb4e1347ad.json and https://artists.proofprofile.net/proofs/artist/223d7f2a-d3ca-4eb1-a849-ebeb4e1347ad.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 0x379c26d4825e2fc4069970dcb2ba76bb1fede2883df7722f62159457cb1d9191. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZNWX2257608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acac66c006a80a741a0ea64cbb0471805346ccc5553f30780585db8ebe5faef. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZNWX2263668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe6a1df84c6a0b6ec807db9c9b6c832eef8ccc55bd2d9b59ccfebcf63cf1754. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWX2261469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8a2561531f01e822fe91b2baeba96827c1a734a6ba54460c8ae0256fa2756e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWX2280202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a623bf01e085cc36731496249e465ebe86a051abbf5f6c2ed694d7ada49b525. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:08:01Z), 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/QZNWX2288863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa527656444413d125a4f2619fb7e3389639479689f4b0425127ab3842d493eb7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNWX2280738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4554045866a9faa374bfc41cac6859f00e54d6a145d8c63f1d5f82fa98e6a2e3. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:39Z), 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/QZWFM2340402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d08fa751ba922a98b7efadf6004d6c35e42ee097ac6e7ded3020bc088bbb7d. 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/QZWFM2332631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67b37159fd4ce2193d07ea0124e1db5d9cfa10be6c8dce040e12e621a33417f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFL2377908.
MIX SAN MATEO 7 - OBRERITO - LINDA MOÑEQUITA -
MIX SAN MATEO (NO TE CREAS IMPORTANTE, TE VI CHARLANDO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858e54600a5ea4cd663235eb03e73789ac95e1cf8b81f822b9c802ba5bc6de62. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFL2377910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a42712f864651eb7610c39b962757c36ab719a9771d19c48960ce6fdd89d65. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZNWQ2416566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358aa4800c882d24343b5f72b23c2fd426ed5ebba780bacd60f476493ae05456. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTB92441710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9903c07438ec90fe05646997e427fff6e37da9ab95e3ab431b6586291b775563. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFN2499303.
Mix Antonio Baldeon - Si te Acordaras - Agüita del Río
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dc00e09a74bf6012ef306cd8f4783d5407f1a01cb0e6920b21ac767e9d03c7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZWFP2403604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606f07d98b9aaf6a781606f2c1fdec336e118b44d37041567aefa70a7000f2f3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEQ2555065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868c4b58628a363619a1ddc8574f643e6194b5a067b21618885aab31e997306e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZMEQ2555190.