1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x86ae46d47b583d763f4ffa4710f62f9b583dc3f4dd4b6e42f75968db84eaa4bc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bd0f09e-e098-4b12-924d-1467a3421379.json and https://artists.proofprofile.net/proofs/artist/6bd0f09e-e098-4b12-924d-1467a3421379.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 → block OTSBitcoinBlock must exist at that height 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 0x98420ba0e58c8d6da62ddbb354eea6a7405fe905e93bdd829231230c25b0dc29. 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/US7VG1761442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29872d755be6c4688c7bbaed5fa4edef0cfade7915874681c89ee7676b7c47f8. 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/US7VG1761443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3042c7638cc44a84978b45404f306cd6009695e5bed90c97ed55779f64570a80. 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/US7VG1761444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78061850549cd4c82bbaff2c5ac71517fb7134a299af7c270e92fc293116c414. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG1761445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6fe26dc9eb609a4ae8ea50b19215f2639e2d6f7817bb0abf3c3f93a7d8450c. 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/US7VG1761446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232640e7d477095cd73b714656baedb1a99c642d71876441ee9c50ff74544068. 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/US7VG1761448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3adf4605bcd5f5fad1caf979c52fdb3fffd98a14f857ee4968c8c00ceda13c6. 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/US7VG1761449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c9ab74ac05e9096af87eaa5fd8dd736efee5b0db84c14a1318dafdaf71746b. 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/US7VG1761450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bee02a13d2688688d8e414af0fab601bff899e37c68a8d108a8573040d896e. 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/USHM81500234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fe288d6b58bee5e67dc2ae004ebc1d10b68659c2cd45ae0cd01e9a3b84e6f6. 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/US7VG1761452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe1f45dcaddc94eab6993cc91109f52480bf7c1b313f9ded8b22cafc2c2ed5b. 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/US7VG1761454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb36c4d3e496564bdef5ecd6c67473986a935e5b519b7e2eeb2b43a3b47d776b. 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/US7VG1761455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8dc65f06b7e28207975128eaef04f51e37a71372c04e129aa74ae4524c41b6. 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/US7VG1761458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044955c842d38b9a707f16ecae599debbcc84be8fb65a030810e51e8a3d4f24c. 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/US7VG1761459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a2bc30b701d1200948320a779eb64626c791d2bdab92564ea5097e23ddec03. 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/US7VG1761460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5aca82ed0e5c3bb7e254ac67075f24bbb4af8bab07550d2625ee1ca823c037. 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/QZ5AB1781145.