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 0x4b73366f76b512a1e34e1d60245941a60f113385f223c9cd6f00a48df841c10a. 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/GBBAD1500358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7499de53095004e51cb24e17b0406793ce2502236a6dd0e6669ff162ffb71c. 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/GBBAD1500359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d099ff027c0cb6dfd7189b1828a179d38591e4e3af2f03b747bf1ca9994d01b. 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/GBBAD1500369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06ec2de1a4f4ddf0362194bfbdd0c70f05717538916e4b805d05af79f0929e5. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/GBBAD1500362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccfcc5ee63757e53912ce8b8dfa6e097bf815c32625a93a4bbd3e2aa8c8d375. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/GBBAD1300671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3806f81822b4933377b226a710d3b022ec553714e3d057ead0b478ceb79ecd6b. 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/GBBAD1300674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e9116d3cd3aa427dc71c7f120c7df95a5a6cc53f1ece3093136c012ae324ac. 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/GBBAD1300672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a8fb4329ad4cfa09edbb9e453dbf36b882717896a68effafbdd176acc516b4. 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/GBBAD1300677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2677353a27a4fcaaaa9a995ab6bbc10fc7f18f81bd76194d930bd472762b87. 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/GBBAD1300678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd942269400dd7504969b6717f7310faee2da8e411faf68a1747174d8e4369bd. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/GBBAD1300679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81f63359317e42536791f82de29ab76317605282da89c23e946c7f86f4b907b. 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/GBBAD1300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e1bd79f1ab85241efecadd069c528b647bd03a95a987cff3233318d5c516b9. 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/GBBAD1300682.