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 0xfa7a3f4e6cd708e67d8b210f1fc161943a072ae176edafc9d6fa93b2d455560c. 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/c872ac90-5c8d-457e-bb3c-c71799636aa6.json and https://artists.proofprofile.net/proofs/artist/c872ac90-5c8d-457e-bb3c-c71799636aa6.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 0x510a0447e1566f4ab261c25413bd431148fceb8e3ca7064f4e3b936f9c43727f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAET2080502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f397b34a5ec17ee4771b246713ab138168d464196b979bb52ad3b2d5206e2a. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:57Z), 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/TCAGR2286787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2ef03b57aea55f7121c19f5cd4af532bdac683751566e65fff1182d7e05f32. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRD0K2301880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0644242f644943c2cd1e9b4b98f4eab7139469d1448979c745af9fafcb7e08d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRD0K2301930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cfe177a0a1bd2f683cea4bdfb869f6263652e4bf8be4d2f40af1438c1fca1c. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:28:33Z), 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/FRD0K2301940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d12fec791ae89b7c56ef2a3ad78a0caa57000b01001d0f4a381e6fbec278a30. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CIA1L2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069f33046fbc96fac3b75a0481fe8ccee0c47e34f430d32d8134179c75b60a34. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIP2415693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7b1ebbaea6e1b6e8788abd7a2e2588d5a442a584e481f3acb455c8399cb827. 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/TCAIQ2415711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a36d04df0acef40d44becd2685bfb8f5d224b912fa1723226fe3b8dd2e4b02. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIP2415735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2f8e56a49cfcd3d11c192232e1d59b0a3d9c4d9c5baf84ac76c667d3be6efa. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCAIP2415760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a134b122a09e23be221904b08733a02c850e00ecf9a1842d070feaaf8617ce. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAIY2489834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889106a8dc0ff80e2896214327ba520ebc89b38536c17743cc840ee2f7ba2dd8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAJL2593389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca56c4a1efb962fcfdb1c5d3b2391c103e8844c1c6b9a2033cd91d1d807f6df. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAFX2168576.