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 0x5b405a5e110f21871faf656fa04f6d109ba59334bdfc3d6ca21a530d01501d7e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81d5966b-2bb4-4d5d-9404-5831e5c71c86.json and https://artists.proofprofile.net/proofs/artist/81d5966b-2bb4-4d5d-9404-5831e5c71c86.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 0x49a37b190098625eae3232055241c95e17432ee36c1bc78862894d6f32781cc1. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAHB2330100.
Cumbia Con Scratch (Kumbia Wepa) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ce1c9b32cbb21a093022afac555ffc2bae9fe61d9b22a4a02c15bbb20d159d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAHE2367866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a9216d74436d1b9a8c74c418cae89e26d42990dfac9acddf47c68b82927cc5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAHI2325567.
Cumbia Chokibanda (Wepa) [Remix] [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefaefd5d5e571fc2b821763222596577fb86d9fe276d96ab1598440175f896e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCAHI2325589.
Aniversario De La Marca Registrada Y Sonido Yomar Slp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e5d9ba72e0e773fed7c11e675ea234ad3b8ddb3b6ab58030cc96d4e280b68d. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/TCAIB2439141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d2e7947fea990ebca3c2ab93709e07694433bfd73983aae4d12d2c4e6ae9ea. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAIB2439162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a63659ead469c7a8d98368818d2bb9eab78fba3b8087564e14e2ba49e4dbf4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAIB2439826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ee3406984a055ea6d96305f3efba4fb546ca4858827de7412f2184ac629d28. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:02Z), 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/TCAIC2466589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee594043ddb511b66f58e6b32d1bac9344c3f3b844c0000b24f0fa7f1acc5ba. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIC2466599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a37b190098625eae3232055241c95e17432ee36c1bc78862894d6f32781cc1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAHB2330100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0ed890a3bfc84fb1e0ca242298a6885de1f4da88a876594437adba385b33d6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:48:19Z), 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/TCAIC2467872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b0a2cee218f360e7510770fae979a0b25b7d98a9e20b2b43cef87be8aed835. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/TCAIC2469860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a09ef20993ff24771efe1d768a91c28a74bf13ff6aa9c67b608bee660d60c70. 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/TCAID2469868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f9da4f61b448fa6fbbf99f191d0d1cbce93cdfeaf92d9ccf6cdd69960c0fec. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/TCAIC2469884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb261067e59bce9605dc0156e2d34963642957ee48c9fc48194d7fba4bc9c5f25. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:08:33Z), 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/TCAIC2469914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d50471a045f9c4fefe4dff61f903e23967426d619aa1c92f00d0d6d1631248. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:50:15Z), 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/TCAJR2576562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f41cf5be698e2f878722ccce4f53d882e89ac761cfb79b55cb9bb5221f9303. 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/TCAJT2585733.