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 0x3f827a4282fa0b031895c84c85041460ae7233b9d38c171fb86a4d58898191aa. 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/09ca4212-0a09-45c1-be8a-37e13d5c30f6.json and https://artists.proofprofile.net/proofs/artist/09ca4212-0a09-45c1-be8a-37e13d5c30f6.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 0x19bfdb53d49fba89b3ff89fc1c42a97ac4c8c2389191b55b006987bb8465c5a7. 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/BX2S22000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9919eb9681472383f8a22a782a4c4e70855a910b13fb245090872c3cc0489c36. 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/BX2S22100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48213b517cc3ebe8be6873acca3f7c0f3bd0c086b42b75a292848b2f140c692b. 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/BX2S22100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ac9327a37d282864d036c43cd1adb9ca41053948986cb0f3bbfd1aa5f7dcd9. 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/BX2S22100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5068537ff250ea8258e137e25c59d6d4bc82094fe610e661806e7cbfb25cc59. 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/BX2S22100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6e5456adddc57c84a31811a5db8f5958119869b9c51339f28c13a573c08d5c. 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/BX2S21800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5900601224fa60624994e6a48184c8143c31a956f3466d6c35295d3665c53844. 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/BX2S21800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6be9d3aa7cbc6273c89492038900391879bfef931b8e93f16f2b4b920ac952. 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/BX2S22400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6882fdb84b0d3b7fc6730f2e0d84d2c6d1dc66018ad9c904a68584b4a8363c98. 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/BX2S22400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056032d03fa2aa4f04bbf3468cf44c0461c8ae9afbb1c3332dd3cd684715faa4. 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/BX2S22300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b690c82dd00edede1ab260bcaef60a4aecda4531b6451b3bc9c05a159683a4. 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/BX2S22300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e1b4c006ad46e37d5aa81dd2bdc0c35e0de6deaac898615a133e35cf308d73. 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/BX2S22300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674133f32dd6edc07b125d813a871de97e810a92d2a82b4fd9b4e1db1db43aae. 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/BX2S22200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6e5456adddc57c84a31811a5db8f5958119869b9c51339f28c13a573c08d5c. 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/BX2S21800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5900601224fa60624994e6a48184c8143c31a956f3466d6c35295d3665c53844. 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/BX2S21800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbdc8c84acb4ea0cdc4dc1ba0296b26c53fe0601c6bd28d6e0bcf7e6214d98c. 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/BX2S21800014.