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 0x7bfbf42281ccfe0a7d90a98ad3610b4c47a4dd32289e531afc470eea3efef242. 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/GBLPF0617048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6976683d52c1d058c7ad9f4eb4845f21c60a9d1539d90b6ec78c47c1864be8. 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/GBLPF0202560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9369b4ae69e60a55724a548458caaca1e584a022351968b8453f87ff53a03772. 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/GBLPF0207360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb163fc45cd7bad9431960b31175498b0a256bd48a474aa1d51cc6e1890b29d2. 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/GBLPF0207838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ea28c7f89b7dd8f63fb423c8dbbfb65bc6bb86d39ad84da3e52fc889d0bd9f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLPF0208622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029e0d518addf0be70b327f832c080f8666d30034911e601a41f9b494b47ce67. 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/GBLPF0208950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f5f923286f784e41cef9c1834c5e50cc6522c39b6d2e97e50add576d9526c1. 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/GBLPF0209795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dceb1f4cdd2cfc62c9b8857226b9b40605650f3636912afadf579793b92ac4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLPF0210764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c90280e4d97eae6f44c46251010e5b864b8b0abf76902da3eb02c44c44745cc. 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/GBLPF0210963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb638920e15e2a913ec3c6d97dd23b7d618662a81212abb803099944c15128f12. 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/GBLPF0211784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52ba69aa7fc6e08c89eec23a6ee309630114ba27dddb39d49f7be3a6cec5101. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLPF0212281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6105140c5c6414e66910d62e8fc271f6ed1c3e76e9b3b8ab1e2fc9a3ada3daa. 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/GBLPF0213076.