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 0x18fa7236728126f643220dd4ca2354ad5c817014ae02aa29bc9243ecefca26e5. 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/TWHM72100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a38a8625593208842d634306b9634fecaae40e078ad329c6a32c7368f7c3ec. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWHM72100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89abb403927746c88e7a02b48f896d3b58ec7c038a80d5474aaac64baf79e9b. 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/TWHM72100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ac02609392af51654aa930f9714f9ed32dca75074356dbb9ec628e7d0d54a8. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/TWHM72100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6566b07753a20bfc5694a261f674b2eda5e37c05ca52b825e7b1143e2760b0. 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/TWHM72100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bf2d2ad15c01ea9c42d4341492e71fd2c1daa63ae65ffbc64f530aa8af3116. 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/TWHM72100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c02b69389f2f7ec00ba2eafcba585e5d8242c4fc0b747effd0a984924b6965c. 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/TWHM72100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559633dfc3a3d6f5fbf45d759f394ce0a1925bdc033f441e52cec65ea0dc8a82. 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/TWHM72100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f49f37f55580eef739de28a6ae2e05d7ef8753c5457435a1f8f5ac7aafdb5ed. 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/TWHM72100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3761ee3d8f14ce01c55de1e9dedc3deff769fc4d411fa667db3401d017fb23fa. 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/TWHM72100010.