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 0x63553124c92d5bb422b9dfc03e142603f91708163e59a12dddafeab0d260ace7. 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/24a69378-f7f6-4ee8-a0e6-b282078adf73.json and https://artists.proofprofile.net/proofs/artist/24a69378-f7f6-4ee8-a0e6-b282078adf73.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 0xbae1a9439a0ae5be77b93107160640a3d1b997cb43ef874eb25ef4e65861f08d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:16Z), 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/ES5119800890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cf5065da40e5a26bc91a34f41898c8cf95b4ebf80df10acc2f46361ece9606. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:54:54Z), 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/ES5110204094.
Manolo Tena y Federico García Lorca: Poeta en Nueva York
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ec5c0292294b5e55619c538d836f24cb1b54932c64163e2a3d5efb76145f4f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ES5119800873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a685dcf1c9c3fe21275c40682572d5175cb24646906b74646ab4a916ab46ba. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES5119800878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee178a453f59b5b2de8022742153bd0dc68fab72ec9ba12b7cc22695f393cf3. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:22:50Z), 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/ES5119800884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0691c2dfcc73dd21b7dc824b0a1d1ae59693a5c33b360dc4e851811e091a4715. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES7351300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e10b5e606f0005ff4c0b0bcc3a8e64f4e85e00c9bf36463fbf13300b36abff1. 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/ES7351300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca79fdae488fd4c43915f035f858f57e56b2456a8233917f1e7d23fd8c267375. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES7351300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f20ed7973b0adad055450d59f2bb34ce0be114695a239eedc7cc8213eca6be6. 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/ES7351300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392f05c06dab4ed2d6a21c53708563f6079b3862e6c53e9ca2853c89a34c5651. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES21S1300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28ac01d0e1a13cf96345e146cf62d77a9633252ac05bbc7d21995391239fab0. 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/ES21S1300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430909be680f1fca2ffea068e0f32874baaae4f4ba254165fc0237f31fe9a3c6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES21S1300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1beda044bd3cd2141a6b8b29e32e04d4e4a7dc2c8e424802bdfb5934a937783. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES5021800696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eafb74151dff500d894fb84ab1d9752afba9ff931e938f6a140f9530bd33c03. 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/ES5029400293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eafb74151dff500d894fb84ab1d9752afba9ff931e938f6a140f9530bd33c03. 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/ES5029400293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105fc637b72262ec6f5f2a7923ddf79f1d34edb559639256ed39a39e34f2d75d. 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/ES5029400312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0ba18aa48d1b9ee49f161ff2c8f026d8256cb20f23cd79d0d854d3f57c8bea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5119600113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a685dcf1c9c3fe21275c40682572d5175cb24646906b74646ab4a916ab46ba. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES5119800878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31cdf18b85357312772b76f90aa4bf962cec61304e91fef91cd5845f465d37c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5119800874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105fc637b72262ec6f5f2a7923ddf79f1d34edb559639256ed39a39e34f2d75d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5029400312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3ab5bf86da4268d63e26f026b3c59931068c0290550b6f4c963fdc0c93fd0e. 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/ES71G2248064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd180543d231ece48efc679b4c5f39c25566d8b398c7ad416f9bf34106b5ac7a3. 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/ES84S1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079c6fb5db5bea18bab477daffdfd5421f6910d6269e75449a4ba6ac8109dabf. 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/ES84S1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1f8aed00b3ff8522d325f8b23b8dc2af0d38aae86fe71d59bf82b62a1ba429. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES84S1600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5fcbd0a4f6f4d8565c24632021aafe1d62d282ea739a49bdac1cdccd6fb4c2. 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/ES84S1600026.