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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930091e14c10cfa26419089ff04dee8f02e77320e64cd067b15fc82d2895e0a5. 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/BRA222000737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa49dd7423b5ab00a602751b06f19c9d0b9a10f1f7cd9650aa92b978a5ade6dd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BCUMP2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fb020d9a01662a3ff13b0aab2cb426af5ade3fb09ab3b59cadfafd4ad8984a. 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/BCUMP2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8d12f4803aaab6ded506c2f17f8a697d57b5c8aeea9d4868f6d302ea487cee. 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/BCUMP2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bcfabfbde4d3ce43eded28d34995b092012e050b5e29e2bc7dc0db83d60236. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BCUMP2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32033e696add3b4375e0c5eda5a84139c3fcd1a6e98e0eb8acc4dbf5a21faf9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BCUMP2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4dfe3830fe3f4aa68428b81141076fdf60c492b75a5aedc9e8a4acc2ba6a5d. 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/BCUMP2100008.