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 0xa8b52600541b453ae34cdd92ee5f221b1c6fccdc137b29988ddc57f0cf5dec80. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX89G2341939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd6968377c027db15384a8106bd894a143cc3ee6d1ac164723e48c81fda3509. 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/BK4DA2317734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b3406a15dfed60c9e10103c4e630fe393f1c03f3d6407a54eb92de9bf2aa7b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZZOPM2239800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0519e7ea2ea6423e21d201669f40dbdd51162bf4f793ed543c05df0cf5fd8c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BK4DA2317735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff11bf27dc6e394bfe50015167aa07e5480c98f530fb90256dba693bef84669. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/BK4DA2317736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf53147556f12cfe03aa8b3ca3203be3b8dd1e6c9997fddaec68a2491aa5fe1. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/BK4DA2317737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a0ac82841ee6e9b9a65b35f49c4955f2eb14ad229c44f6186a7b33a5d459e1. 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/BK4DA2302021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1219a0521a352bb4d6f626b1822819df12ce36d1779fd59c2332429c5d2b6996. 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/BK4DA2315564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0541ea146cad69119850ad6cb9d39e50effbc141ea2603698ffd0124ad071e60. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BK4DA2307271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eec4568113492e939ca9f2981411262278265b987d7752991e615b90c44c36a. 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/BK4DA2311936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6256c7b22de474f6a1930de194c515d4ae96e6f43475bde86d6a0c64512ffe96. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BK4DA2317738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155816ca3057342bbca37bd066723f1b53f396f0a092fde48f7dea408180c91a. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/BK4DA2317739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b76861aa85b41903309f972406a3b11b0380f3bb0545bd0da30ba3d8f5b7558. 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/QZWFL2519901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbeabf6f222559cd3b3f421ee1d6be2c966a67682034acfd1ec0457b957e047. 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/QT3F32441049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa266e49f9d9ec918e1e992769ee10ca6c2e338db1604afbfee99e7ef6c4730e1. 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/QZFZ32516427.