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 0x80376d6332b94774ef52b845a2d54701fb177ab58daef8437ea1cfd3a38ecad7. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6026312-69db-480b-a8b7-9bfe7cf677cb.json and https://artists.proofprofile.net/proofs/artist/b6026312-69db-480b-a8b7-9bfe7cf677cb.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 0x86798eb459b4d5ec6e4878c39079ef1e22b7ae0b54ca3bac64a9ea8eed81b2e7. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US83Z2204774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527a006cdd81a43545756aac4943fd88787098fc7573c11038a0ed4120683aa9. 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/US83Z2204775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12bc49bd0be270da9ceae7a4cc96b23c525c715f3f276904dfb6f8124c7920d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US83Z2204777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524ebbaf748f6c36f9bcf0aa1a73678d0996726d4eebb61348ccdef5c0466d2a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US83Z2216309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2d169228227cf167dd8cb881afb8a1158ac2e93f5406a05814b354c64d3e64. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US83Z2206475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba79cb1d7db43b9e04760e56852130492d5045c2e43a7e1fe3cd4c82efe313d. 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/US83Z2212375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12bc49bd0be270da9ceae7a4cc96b23c525c715f3f276904dfb6f8124c7920d. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/US83Z2204777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca27879528063db124b34173039172d7c099f6321a9f5e0923b14ed6b2b7ffd1. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DEH742004686.
Esta Noches - Cafe De Anatolia & Rialians on Earth Remix) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbefe4ea6e2f110f04d7b3a030c0ea50e8d7a86f8684a6ca0ed0619ffdd2b5d7. 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/US83Z2200914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb423b59fc34816808425ab904da8feb9be3ab02af007ca235cd21cabfcfa3dc3. 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/US83Z2207172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06972d66d87d1acd630902cf47a56a5fb37d757cc42d5a2ec63c8490f23cdfbf. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/US83Z2213627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c533d303e8d1b53139ba91caccbe4ecaed5fff1a3aab9086f3a2c1c99a1683. 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/US83Z2216568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf632b99a11f1ce4af71be1ee9607f62834d628ed50d09f0ba364abb912406e49. 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/US83Z2341967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238739dd73f2f9f0aab27195ac12d0e05bbc008abe2186af0da0fdffeb0164fa. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US83Z2340796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202cb314285b30f22f977ef39dacdcfbaefab650416872a5400969ae0e80829c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US83Z2340797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32c67f0e37dba45648f95e9d89f817d396eb96658c02f9ea37dcf3592e94b67. 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/IL7532313109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3083ec1fd5e0e8eb4d10f194f1be3a904aea83083d6988aafccc679defd10b88. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/IL7532313110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b87df757e9e7625f01f0e35eb76816c67db1f5b7b066a70fcb6696d835e4c1e. 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/US83Z2340930.