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 0xe985e1d89ad38e9a0f0af738dfb2b562115d9773c6c09cd47f98498ea1af9cbe. 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/1f8722dc-36d0-4c78-ae65-e31b36b34120.json and https://artists.proofprofile.net/proofs/artist/1f8722dc-36d0-4c78-ae65-e31b36b34120.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 0x8e0f1765891cde520d0850f9a43da0a78c80b6602d6a1066755de2f65309c055. 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/USA2B2104457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedd1023625a7e0f00e859d98f188fed0869d892475939dabb0c10c613d5e7a8. 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/USA2B2104458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63bcc90ef45444515af679f47e8345c70f6bcf9300542450cc4b9e05e2a1c92. 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/USA2B2104459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16edf4f43bb039baf135af56ff96428d5e1390af8cf41d02bfe581de874d157f. 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/USA2B2104460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c26cbba1b8bfab45a7f8db977944a2da48e1598269897574865239f16db201. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2B2104461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3dae4ffcd22e073a6242fabbbb7afcc76c7714cfbab65165b44766311df079. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2B2104462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1933058ff251f641b061ca8b6107fee9ebaaf6f20ed088d11f00aedb457a8331. 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/USA2B2104463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71e542d5511092581311b90cc2d7bd7e3f9bffc57b1d8123ba3827869d35f9e. 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/USA2B2104464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c12e41f9e07a0d57ad0d5a7cd4cd6c8a4b3f032615b1fc45b3fbd162e5c9f65. 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/USA2B2104465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee2ea1e9573802c431d27f55c23003e978bf949c17c328429014effe0d97706. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USA2B2104466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c12e41f9e07a0d57ad0d5a7cd4cd6c8a4b3f032615b1fc45b3fbd162e5c9f65. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2B2104465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0f1765891cde520d0850f9a43da0a78c80b6602d6a1066755de2f65309c055. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2B2104457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd07ee73c08d410a070d4b03609a8c11d1a02f116edc782230c609c105a7272d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2B1903149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a6a23965d896e272c1baea51e79e8bb5897ab9d4ee1a9b61f06f86610b6267. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2B1801509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba382dd5145d9e8fed2c75daf35c2f01fffa4b7435a1f31709880e9fa198d65e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA2B1801511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a6a23965d896e272c1baea51e79e8bb5897ab9d4ee1a9b61f06f86610b6267. 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/USA2B1801509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aae63dd0d36a02d2f4ac9e915b32d7ddbbab9ca433a1d06b44094d2f6ff5657. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEYOK2307175.
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