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 0x483a59078997a8002b9c8b2c044781f0e2414ecd2818d72aa37c60d332a57525. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27cc080f-9f85-476f-9719-f16f284210cf.json and https://artists.proofprofile.net/proofs/artist/27cc080f-9f85-476f-9719-f16f284210cf.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 0xa31106b405dce5b6c6ccb018be59a621975eec5719f508b693437c677ed5a22a. 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/GB8KE2410080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803969431cd5f616c98f11e1edc4659041c179881eb74a9aeb6c15bae61a0ec7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB8KE2410081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997cb6391819bfd4ab024b87fc9347b4689ce642cad3bcef35823dd374dde3f3. 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/GB8KE2410082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90219266568b178f8d7bb848466d2846c33f7b07fe37604422e1ae9acf4ad9cf. 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/GB8KE2418817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a2a601cdef9c26908f72fa4cbe37dfd11d8954803b017f237c315ee426b1e0. 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/GB8KE2418818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24488420b7467e70771964425f762e0ec232f2f6bcce69b3354be3bb8f1c69ac. 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/GB8KE2418819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f5ca18923bffe86e9c0c0ecadfff0965faccd7ece62c743267f233204a4c2d. 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/CALVP2424825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a064dc4c8ef2ea256347249e0d1c9c160773770676b2302c20a245e47aea6d7. 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/GB8KE2417376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c94a263f856ebcb3f0364bb014af955b47b7d3cc0f44d66bc072db1d7fe3c3f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB8KE2417377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9a95cbdf3d72c89775ed7356171585d8ce73ae09743c1c42fb537d64c0f344. 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/GB8KE2417378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1936e9a2e2a5743df8a6ddefce9544cd1bfc4e2de09806d9e41f51324e32c2. 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/GB8KE2416665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfb8d6ba3cc3bfffe3b240b4acfca9f9e2e0f0b84503ea3d7177eb0f4a0bf84. 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/GB8KE2416666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3a9a66d091ea43128f340a62966f85d78e65f5e35f207e0775e50f7a788531. 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/GB8KE2416667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a76e75f6e339e920208e7854886136205a607480c8c3f18ffb9d17853f9e3c. 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/GB8KE2415298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b69448c40153311198ffdf17293c1d3790b158cded449edd64f087bbf0f74f5. 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/GB8KE2415299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132de6758b83f87dccde7a9bf1a9ac0d427cd5c87688f97ac905678fd1e44589. 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/GB8KE2415300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8947e37e9d0767ccab68bf5ac5fe5c00ed54509d1aefcf780a48b4aa218b2b5. 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/GB8KE2414786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4684490cfbfd8f5a02492a01c164370617396650d91a3097451030baf9a0fef5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB8KE2414787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605f9d5923ab3eefe7c4844d01900e4cdedacd1520f24faba51494e73a5cf300. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB8KE2414788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b93c128613d2bb3abb9a6dfb7d7e42bd2cc2d53ac7fc91d67536c0f48269b8c. 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/GB8KE2414062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94898c5381b43e5c6c8a75bdd076a9682877ea06a6dec4d55fab14a304f0f79e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB8KE2414063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab0310a9b735e90d4d3eedfd8d693962ad0fc859da78b78e784f45e1881d616. 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/GB8KE2414064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1243b54c773d7886e9e8a063bc09207eaf789655d9e0c6a8dbc681c12911cd6. 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/GB8KE2413938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9951c50e7e84907b6a6987817edb4041019367dc6c30835fd75261744fe232fe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB8KE2413939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83ca8710f51bbf67a8a80735dafa6cf88406f163eeb350d78d07c1990ad59e6. 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/GB8KE2413940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5971b01dc6b57db3d8f63c4808963c65507710f72536954e4e4d8dc2f413759. 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/GB8KE2411617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa8d068ec799a9f92f7813f4bbba999a86a50551227dcf25c2e6686460e34ab. 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/GB8KE2411618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0cd07bd1d94ba1a724c2ed525b697fbfd2c5d21a11e1972f4653d3709ca71e. 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/GB8KE2411619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df1ad4dab37c5d04fdddbe3a104cd05bd782a9ef469e3661f50af9c1e096cc2. 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/GB8KE2305657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c88fcc0a8e679a205bfae81896db1db3693400e0b3dd26e3ec1804bc327d2c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB8KE2305658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf96255b9564cd4af69f92059fb2c47b1a108dd268e9404ac40010c0121c58a. 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/GB8KE2305659.