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 0xcdf675b3161974cb8435a75742fa113566b30c17bbefe23dd93394b4e2f7ea5c. 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/GBSMU8867369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4c4e97b041ccc7ea060b7e2c227823d4accc9b8b58ae4801df145ed3bb847f. 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/QZMHN2456272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f66a51ef4fe6cb1103129b9eae3b02b3b0e1ee9bd289f9b8f8de0c375045c86. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZS652489229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79b83f4a286e4444a2746d55fef61e2ba8e0b2bde6caa7b3e7736b471b9cc5c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZMHM2488636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7098803f7b253c632f148ad6cec86e4b8c1208720a52c6a920c99a8446b7a84c. 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/QZMHL2466853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dcfa98658881f7b4386d4ac24d26d2926e4ffccba04878be6e9d1ecf3268bf. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZS632426996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc225120385c807189ce961394e3653aa56354a16d3db57d9151b6f0bca3744. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZS672449908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2979dad6c1ebd3fb24e292e0c1be0ab44923ecc786b7f1408cf4b8fb0991679a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZS642441013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad99021ad756f7ba8602872154026c0df1ddc8bde00a01978fa953de2ddf2ea. 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/QZMHM2429072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cdbc1a0753ff689a00f2f3f1533dd7c5b49027a3df46a9827bf204d300edf8. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZMHL2455946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344a0ba46f6d6370daa95b3bf9d2224d28b5c5127f833c059683404cd868afe3. 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/QZS652425472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbfb07c8498dd2677524eed329c92aba41cb1b7511e84d2f4e3daddb24e096e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMHM2492162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb412ce313357b0b9ccc363e44dd654ffefc42d40bfa02fea13f6b300f7c2b3cb. 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/QZMHM2462161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bd03bd1132121dff43244cba3976132be754edaa030e45569d5b60be664d06. 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/QZS662452794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00323a3a2bad7cf78b51aacabcd7bec6692710f82bca9bdaffa8ec07a4e95011. 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/QZS632448321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dd18d8a93464f70c50552103144f4241f3bba035151b50433e8bf807643fd2. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QZS672465639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd679dd4e6a83886b59933c5d7e219e207960dfae510f4f5cf7d83e3c4b26464b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLCK41079979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4446ac577518626b7399b57a59069467bcd06a9e4010068e23958cdbbaee53. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR96X2070867.