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 0xc0f0bf4f5149667f2a38ce224cf07439dece937e0d51356982498f650f28a56c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USDNB0864223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624949d815dbf2259c057f9a043bde98a7bd3c134e036ef1756704a0d8be15e6. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USDNB0864225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d28d60470bac83c07482f9927adc8000dcf88e37f9e57c00a79a41783454bb5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USDNB0864227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533e9005bd90364833eff6d12a343287e388f300a9c871487c9531d1c57d049. 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/USDNB0864228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f28612ee172385767d234c90c37a4b74fe6b6fad078a99dc258926afb969f45. 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/USDNB0864231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae0dc7efb6213178d1d717ce1b5ce80da7819e5353b52d22390e26e4b78228f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USDNB0370501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3242906aab20d297febaf0d37297b6bd10661ad62112dc903cf32c6b541414. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USDNB0370502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea5ab8dfa0e4e393e6b147bb868e93a68ef55571facd72d114a6a9be511365e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USDNB0370503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c76e599f5bec01d833ef5ada52a8d2758f1b7e130117a27b160bfe0587b026. 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/USDNB0370504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62613ef8bea79aee909f64c679cb44a0a50cf916ccd9034f8b0ab91cf14c4f32. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USDNB0370506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859f01ffbe1ecfb7c86d0ee2fff8648825e1513db11454dbc18f34a21f7a4eef. 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/USDNB0370507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0feea7184c0bfd72124f7494b043d00847bafb01e00a355affbc68616d7cda. 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/USDNB0370510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f06cccb8535b0f4b1db29586395b83288038645889a13c48fc12de4df98e89. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USDNB0370511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae94dab3d6a12e38586ffb93ffcd2034f1336c33fc2fc28898da1c5ce6fa56c5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USDNB0370512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c057f48bbbf4f0025a94a0325bcbb35a7f464a9d82e15e13ae90c8dcb54cfc. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USDNB0370513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986cd78365c4bdc131ab04ce1130f1c1e3f9a8e698b73bcbee6609ebb531094c. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/USDNB0370514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e9bb5dc1c13de371eefbca48405501d8af8b46165f834521e4e20392342e27. 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/USDNB0370516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d16c16b297f9292517dcca5bf8ffedbf622d926687f558e6abda3f55dc2b37a. 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/USAM70643201.