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 0x80282417697fa7174e4b6fc9e41b677f3794f0335e86d8ddabd34b6df2bd6f23. 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/df982faf-d815-432d-a6a8-38dbb6588990.json and https://artists.proofprofile.net/proofs/artist/df982faf-d815-432d-a6a8-38dbb6588990.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 0xac8fc017a4da02d685ce7a75db9193aa9711fa2f976b4b063b84ce5f3827c045. 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/FR9W12339110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d4de67f46a8ea210a49e45ff77ed8214ec6017a7178ede5e9b9936d6190317. 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/ZZOPM2109128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ada72a43e35bbb165f9554ed2228d0a88e80bf46c0a83ddf6be53edd47e22f. 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/FR9W12415080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ada72a43e35bbb165f9554ed2228d0a88e80bf46c0a83ddf6be53edd47e22f. 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/FR9W12415080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72475334f8c24ffe6aba34ca7323df91fe9e62692cb9d3d4be83a11697ccb690. 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/FR10S2387266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea132eb2ec77b0da052d085d3c7d5b02f13b18a6598f26bf96c352e8a95e2b5. 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/FR9W12237161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ebfff23da92aaaeeb90aa9d62e954776c5f3ef5229ec19ad6e1d386d11a158. 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/FR9W12443210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24e87c96c6a4ad3889068ba19ce05ec7e8d6277cc8852ed45c9ae8718567e45. 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/FR8FB2502910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64395e5918e715dd231a8c9f850d60d2cfb35200ec8998c2b982c2a997d7a34d. 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/DGA0Q2343274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64395e5918e715dd231a8c9f850d60d2cfb35200ec8998c2b982c2a997d7a34d. 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/DGA0Q2343274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000fa535f3c9e7afb7d2ec12d85acb83ef4da74d92757220154421144e827865. 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/FRUM72101853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64395e5918e715dd231a8c9f850d60d2cfb35200ec8998c2b982c2a997d7a34d. 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/DGA0Q2343274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000fa535f3c9e7afb7d2ec12d85acb83ef4da74d92757220154421144e827865. 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/FRUM72101853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac388757625edc30256fc5283f1a1466357a4217c62380bb377537d17f614cc. 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/FRDJ72300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac388757625edc30256fc5283f1a1466357a4217c62380bb377537d17f614cc. 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/FRDJ72300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89498a4cf1da8da160c5a454b63b38263bd4ec7ccb78c90e716b581e47ac6a3. 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/FRDJ72100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac388757625edc30256fc5283f1a1466357a4217c62380bb377537d17f614cc. 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/FRDJ72300150.