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 0xa176b0df35ae811046c5063afaa1eaae3df1a51a25e6f349fdd908899929c4ec. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c26520a-57b9-4e41-a8b9-dfa017733470.json and https://artists.proofprofile.net/proofs/artist/0c26520a-57b9-4e41-a8b9-dfa017733470.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 0xe921a5977cdbcf9bdbd103bc1b3da1beef90697d4044721f52c5e6b7c459574e. 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/JPB641000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9d8ad2ebab20e50cc45104a47a670fcf4ed7f6cfc755c862b96301903c11aa. 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/USLNH0505602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a168f7219c1bed0f02ff0aa4b9e93706a756c18e2689c074466e050df5ede2. 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/USLNH0505603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f09c8ca4c4cb5abb79799b1441eac9e8b003f61fba0730a0e4f53d264f3f267. 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/USLNH0505604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc061c8e8a52c6f3f6e9286950127d882d093434a6f5cf5113dca522e1c792b6b. 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/USLNH0505607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b488b0a098329ad8882790575ad82b70cc5815aa2933409943b5ad5fe168a4. 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/USLNH0505608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832191ea72480874551fc7050f24452d9b42bcb5387501b29092e94a9ee27cd9. 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/USLNH0505609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21be0f1f5e19a87d55dcb1b1ddb5ad60222850d111ecf34318744187ad1549a1. 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/USLNH0505611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d83d2886cd13afd9c95814a2c7e565d5e843ad91b334bfc4c90582e156fc8b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USLNH0505612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb7e5706feddeae844145872d6094ce56f487cede23bd0c07cb6f5c523881c4. 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/USLNH0505617.
Musicians from the Summer Program for Youthful Musicians
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25a936f0a34f0640626751e45c996956e0aa806d68dd37829379361450212a5. 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/USLNH0505618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc863da27f1c9c4e6f819c85710f32ef2846e6095677b7f46fb4965949ea1684a. 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/USLNH0505619.