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 0xadb5c39d33a4fc71924b78e5802871c5c770b4b6622d31ee8330f49f93cfbd78. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBLSB1300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09f07eb7e96bd3d4b5ff0d86e8685792945d206d9f962e577db1d0b758633a3. 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/GBLSB1300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1befb20a68054c1ecd13db676a90eeed0dfcbb5f93df3960d3c2180c4e25f27a. 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/GBLSB1300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef038f4a1e5bec01fa901cbbbae530f105ca33bbc870b910eeea10fc0d046d2. 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/GBLSB1300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87ba4848ccb68ea9731b291e891a48116437df9188e9f08252feb6d3e754514. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBLSB1300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7591ca5469f87d4c3dee7fc383e69e3504ab924222e13ca7b2941ce131369e0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLSB1300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba80751e271f3412301b01596a48fb397c653e3a4cb32585a8a2092a9ccbc89. 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/GBLSB1300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4a6875e2d4f08b82294eb98412665ab84b702c12cfd4f7134881509c8bc572. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBLSB1300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64eea7b321bee7828027800c6d3e263c38f2634a534d29d992c1beb99f30e61. 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/GBQZQ1200193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ce8594dc6c7852b767a0aec92225ee49c572a0ec134faeb308596a6c9d6e01. 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/GBLSB1300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4078b06a401f77e67923a44cf2eff3be629eaaeda37e2f1d9865cb2d6bb1dc. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBLSB1300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d3eb3eea953d94fd9f1ecd355b0d135ab2167225cb09f10dcd8c3fb1df57b0. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBLSB1300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc459594e1873b0d5b745d9c8ebfa3458eef13fb3ad28012455374d0177c94d06. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBLSB1300062.