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 0xaa8bc3f717d37a59bf4b7ba10e2f4ab5b4ff5d83e05f249f1ab154149962e0d6. 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/54a54541-3b23-40b6-811e-741aebbd4cab.json and https://artists.proofprofile.net/proofs/artist/54a54541-3b23-40b6-811e-741aebbd4cab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
KPop Demon Hunters (Soundtrack from the Netflix Film)
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 0x415f6c643506d5eeebe2b9aa5d3140cf1e316bc06f9af69c0f31becfc9926942. 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/USUG12504881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8d5a62d25f214ee0fe4d43e0d7a44fdd6ad1eaf8fee9dfd98ce9f41ab80516. 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/QZ8BZ2513508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1035630fbaedfc1754d61dfebd5bd232596e37f83a4a506ef72040aa67e2e090. 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/QZ8BZ2513509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f5e171ac73155cb5add1697c9c30fda94fd01e9625bfe3604d3fb8a3a90962. 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/QZ8BZ2513510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882f2a1712e8d6984575a774556054444b03f65cd615a43f2a663a1e737ecb6e. 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/US5TA2400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f5af60eff97cd13004ff5ce35ce1e5f6507de7b2fe5b7bc6044db9dfc861b5. 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/QZ8BZ2513511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76800ce51ff0f766bfcf93ef1476b28f8671e9f411e27e93df4c1b3315656dab. 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/QZ8BZ2513512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33abaf2e35a4d78c67fb1239893861ea820147f5e8284877e3bf1f8d4c50ea4. 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/QZ8BZ2513513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9084c53a8831f0e5f46184e74c5cc7db98e2d20aeb793727ceea5265825d69e. 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/QZ8BZ2513514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03e69c7e7ddaaafb16559e06eb8f8aad584b01d6fa616f1ab495086bd4db25f. 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/KRA382203167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782f8d3249d4c79bdb4be8ddac890d5e25df3e4052107d514b8e8beed41a1975. 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/KRA341408496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c042206025589f6443dc7d79d0062812f0fcecad4715867d7badebb3013c326. 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/QZ8BZ2513515.
Golden (from the Netflix film KPop Demon Hunters)