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 0x197a868b2320cfa8590c468da33ba38814efea65b0624c518a14c9e67f433044. 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/45b10dd0-21cb-44aa-bd0e-8fadd5c965c5.json and https://artists.proofprofile.net/proofs/artist/45b10dd0-21cb-44aa-bd0e-8fadd5c965c5.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 0x83e47142f5057d3fe05c5c0174a3376b2cdb3717c9f234e086cc0a526c7e683d. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/NLRD52235589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640b6cc9f3011006eb271e25fddb329b4b590e21fe860e77f2a21d22268d2e93. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:32:50Z), 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/NLRD52235590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d717351ad8c51123f8d9a4f7708ee479d9672e7fba8ee4f7600526b80af7bd0. 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/NLRD52235591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5ef2cde27045e5145ed077ef86a76a42abbc0cce979d1628fad3a60158f358. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:23Z), 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/NLRD52235595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afe13f86da2c115baaadd693fdb89e45f7533e0d6b341f125e8771b1dd7a934. 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/CA5KR2152599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab2e4924aab5df34243580ba6344583d10e7a47e1c86119479da0576c731844. 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/CA5KR2152600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2080a5f21c721e25089e23ca40464a83d21142f15330dba45e398cbda02daa. 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/CA5KR2152602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf067196cc5639a6f06aa757a9d36e455df1fd01e99f14d26fd0b46e543165675. 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/CA5KR2152609.
Sonido de Sinsontes Sesión de Relajación No.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6adf602912d6bfa99277e1fa685c6e51011dd225d4630fe4ab54a163cdaab3. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/CA5KR2159900.
Sonido de Sinsontes Sesión de Relajación No.5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe593e906cc9f998d6fcba20e53be73bc9a49630bf840d62fceaeee578a67204e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:17:41Z), 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/CA5KR2159903.
Sonido de Sinsontes Sesión de Relajación No.6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7412d9604eff559005b73e2ee895ed55763d2de928a999218781aa8b9cc30f2. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/CA5KR2159904.
Sonido de Sinsontes Sesión de Relajación No.10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cb08bacc12233e35b62e954d0d8fc91580919f4cbb2a3f2cbfa190a2e6f82f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CA5KR2159908.
Sonido de Sinsontes Sesión de Relajación No.11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22e385a1ae67d2c9e797c7696ced3852aac54e11f0b69707035df60aae5a6ec. 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/CA5KR2159909.
Sonido de Sinsontes Sesión de Relajación No.13
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d5b46450fa979a6d29ddc69c0c1d50b80761030a4e352f740ddac11bc139ba. 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/CA5KR2159911.
Sonido de Sinsontes Sesión de Relajación No.14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c03167e9318fab0bf31bdd9b7e73184b2fc01311719ba9f2f832983baed02b5. 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/CA5KR2159912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc56c10599adee238faf958d5eeb3ba1cf8887894007a01d3082b34530dff22. 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/CA5KR2162374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cd5da8c4326c766e6b953a952f833fac735b2431a26f5208ff2f42065db7b3. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/CA5KR2162379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19550f9d128d00744c6a4dcbf8978909b631ec7ecb6c6b499a3557bb630622f9. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/CA5KR2162380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c4311dff1b74a1e987138e4639b662cf048fef8b6aee097dd92cdb4b7d726f. 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/CA5KR2162384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06ad47b4ec020fd224083cec2768e2316e8aacd05a03bad3fd99fe487354a43. 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/CA5KR2162385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aafb7cde0d9d931853a041a6c4a7a19268134cd32d3e1074461876808b26f4b. 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/CA5KR2162387.