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 0x887a918a79b5f3e3c374c7383eccad1533f07a0013ecb9faa77e1b9fe9c3bedd. 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/GBS8U1250101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa352ea798558f76c0f28f7a8a03660659717a513de5fa3897fb9aa378c584311. 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/GBS8U1250114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa9af832533972df4c41f6eab379254204558b8c185129408bc1fd964a191cd. 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/GBS8U1250102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90244a4928926104a821bcba9f1b3a6df528b5cf63bfab713c510cb91b1e7202. 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/GBS8U1250103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8539aa48738b8e0fdb7a75dc897ffa1911644a7daa659e79df3fe6c250a1317a. 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/GBS8U1250104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfff2594cb38c3870c69dac15ca64b578463a6cd9d1f590ff139c48346c05aa8. 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/GBS8U1250105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7458796e9336d99953a45df034ad031e42c89da4ed4896a85fd567edac0ce408. 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/GBS8U1250106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d8377426acfb901de3166c67246e474715c31681ec1f40a2cecc908a90ee0a. 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/GBS8U1250107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49a519e242baffa77ce12fdea056be077fb788302dca8f1d563dd370246651e. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBS8U1250108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b3a9b9ff9aa8d5a4b04ef122c83a706e6fc7b04ec10a0429a00ddfe73881b1. 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/GBS8U1250109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceda6253115a4f081e7940bbc1d5a2b7fef60a7eebc6615066103ba8a32d9f9a. 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/GBS8U1250110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a77615995464d36d3d249544ae2bfd3e1d4f2dc37cc0a14502b4e92d117c81e. 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/GBS8U1250111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c541b2570691ff2d1b0c37b335dd656bce92fc904785f709aa20b5cd8e3be94. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/GBS8U1250112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44d87f0a9d8dc1e148b418072f8898f07eabb468ece0a47c117edd94cdaa9cd. 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/GBS8U1250113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dcf30785158d1614664b18bb981d2c990414fa7c273983a6bd2de142165800. 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/USL4Q2102150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592dee89082fd83ce7a2a4fba01fce992c4ceaa9a7038947be0237048716c2e4. 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/USHM21901352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3a4e708174b12192c2eaa9b9c09494815d5c33ee8a321fa9d2588f7b08120b. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/USCGJ1874528.