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 0x811928715241363a82f614e0e64ebf10c15cc5fc0bd30e7679f96687f9c596ae. 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/1139a3ed-4f44-42b4-ab43-d32246530d6f.json and https://artists.proofprofile.net/proofs/artist/1139a3ed-4f44-42b4-ab43-d32246530d6f.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 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 0x7c8f740192611303d1b8f29e8aaedf23e0a71a84f08ce2a3e5cfd765c44229d7. 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/QZW9L2249734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da3e20b08a8b46c0e7682c2affc61c55c6986276a47883293e3eaf7bbd4cf54. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZ5AB2384272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdf3c6083c0dd50610bcbec6cff012f35efdce7a2997d98b9255f3d9c83bb26. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZTVM2416364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f821b58f340c855eff2913dfa0007cf7a49732c528d954c712f732bc552245. 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/QZGLM2522959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe97f0c6db59f70889a84a73177b37dc6ee378c159dd700c8e59970c4df531f5. 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/QZGLM2582293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af92b106933d960c1fad6a9cafb80bfd5944b0c68079df147ec01541deec0f0. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZNJV2554907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac89706ed03cd4d2e2520b41ce5ad9a053e57d3565de5237d08393ecdf811ad. 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/QZNJW2583920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56de872d3649d19bd58cea2a9ca35d84fc21139d3842a5749d04e9ae4581552. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZNJW2583921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f879c60c5e8b6f4fa7bde43d68fa88b8e3879fe8a354a77cc850f5c275af89. 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/QZNJW2583922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda711c3ba5d5383c7d97973d61ec045021a4736ba410039ce4d021b261fd1eae. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZNJW2583923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e96b6d220738da2382663b62cbf33e2ff9147f76196bca9872c3e74cd4a0ce9. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNJW2583924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91242311942ed8c58bdb9cf1809f375562fe9d5a62ad5bfaa8682f58de2fdf3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJW2583925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8542cf871ff389f0f2e213b19a26210428200ecbc88bebae04666c4ac4aa687. 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/QZNJW2583926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc59b11f03c8f712a15b4e620977bf9f3dbf5f2ed3131a96ecbf319083ba2a7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJW2583927.
INSTALÁRTELO (feat. Sleezy O & Young Gallo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70274294f8f12e4dbd1b69ca60ace78a80cf338b899b5cfe406637ca69a225c. 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/BK4DA2319415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948fe15f7ec3c097701b4e0de92db2715518b28d972bb74dc101c148e7ae31c6. 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/BK4DA2319418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5c62380ea05751a3598516cac78d8389c7408c4356fd108d2879f371ef255c. 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/BK4DA2319423.
Vida Malfiosa (feat. Yeyo & Young Gallo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d3413f52c551909e4c10e2f538be1b2387acf2d946cf2ea297377072f40446. 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/BK4DA2319429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63699e45b397781393115e7e873af950f4b8f588e85cf8d45bb309d5a4c80407. 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/USDXS2400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70274294f8f12e4dbd1b69ca60ace78a80cf338b899b5cfe406637ca69a225c. 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/BK4DA2319415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e11f9458b5c7ae5df37a8e28c6ed8251d5a54986852bc6f05873b1bd951a93. 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/QZXLZ2513204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09244a61338d681a12ea178368728278f12929b2f61ad636f9bd0c9f3f3f443. 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/BK4DA2414403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5338316655ff87629cccdec64c46d3fbfda10105ced4006396366fe833b2b127. 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/SGW502367176.