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 0x13b5a774d002a974135f7fdee250876cdd27d2c69f087405517eab9e19306c1d. 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/fc1dcc7c-f9de-4ee6-8801-b72efad09b72.json and https://artists.proofprofile.net/proofs/artist/fc1dcc7c-f9de-4ee6-8801-b72efad09b72.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 0xd5853e9a8c6c93d58e5a064348312420f7737ea5f79e350eae44fa53d8eaf6ec. 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/SE6XY2157946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e1ab45b9a8079465d173dadfb2c972521ed6dbb8c7d319ac037603d6e232db. 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/SE6XY2157947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30691a7b05dbab2743347a2bbf784ddb27e8824a8c04385a9596f82bbe126880. 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/SE62M2255913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6529f698659d25bb7444296c5a5008b1ac1229d0230303d30ee23b986d28a1. 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/SE62M2255911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2475d3a10fc38d448802bf992f34706d7f23b004eac34d0a5047bd74ee76f8f0. 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/SE62M2255900.
Yo Pensé Que El Amor - 2022 Versión remasterizada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9346656328725fd19d27f75757a8bf12158aa55d951e254147cc6da788a4508f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE62M2255903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe6846f153aa4690fc87b6e1c17f26b232cf93877f3708f24a094e8523ad149. 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/SE6TI2397467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4ca92eed6d9fc8b1bae4e53a8bfc5697b80ca5f1cc0473f3bdafcb11409251. 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/SE6XW2311425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d810c6d3f740bcf41696cf9d476a677a8832e255c3c54f5bc8320be2d0edc6. 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/SE6TI2382285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8792d2c038a1af2e63bc90491a8c29bbc0ca7ecf74298a5f8eed43b7710c409c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE6SA2371709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f261a131e0403bf645cd0c66a2e821924da8ad376d293fe94c1ee86710c9a3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6TI2355596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc992be899aac4cda9c9448997b5b057b43020e881cfddfbacec231682829749. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SE6SA2349847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80d3631cfde28f5df8655929e565faabd787a2d82eaaa503ca91fa1a0a4c43d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE6HN2408956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92562e12dac33106e565ae4ab3c54a9cfbaff739059263c01b439e823ef125f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/SE6XW2419038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7445069a5ff72e304ce7fe33ddaac8c577930cc58e9cea8ca198b4ace9f23f. 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/SE6XW2419041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda65f10c2042bf860f979e41f881e690479726f3f560250b5a30c3b802c14909. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZNJW2354822.