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 0xba5d2a2a0b44ed7ad0c3f4eba60a9e0e8d406cb40f8a40dd230760af435882aa. 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/TCACT1685833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee3590947b8a13126037871a65283fd91911740e454ec5cfcd9a2340caa2c31. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCACT1685869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25460dc8d65b26f74166ac377358ead9dbc8bbce3d430418ab2992fc36b9ecb. 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/TCACT1685696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653cb54c0c4b8cf817ed2dd264ac674c6ffa771a0eabc7deb0f076c8f5faaf7d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCACT1685698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e62520f7150d45c8602b63c8d412352dd0b706c1b53a5ced432e691edc8c0b. 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/TCACT1685703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f039a89b91e995d8af3f33bfd716ad1a4af5f16928d94279fc93cf615d08f9b. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/TCACT1685686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dccac713badf3394c6a65d130147d1b5d4c87ac6e0545980a7a87122ac9a5a. 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/TCACT1685689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb32d9dd6a1077c70cbc9f970ccbcf7fce325acf041c19903cbdeec3ad5f5766. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/TCACT1685690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf911ec57d923ab1d7ec36adad01ce1e9b55224b8e6b6a4787d6f2c6a5103ff72. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCACT1685691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42401fd9c784d898540188d9cbb9d08df21a710cbb9584b6da23fcb1ac4d0605. 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/TCACT1685644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c93c2b1d750c69f1c677774975dfb00ba213719f83d2d94af5f1f7906f03d7. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/TCACT1685646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8d9835b01232893f6b9891e24eca5a611b7f230634f4068c6cf84b57b8a200. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCACT1685647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d45e6112432224e77fc39d8ab4c4361da80acb897bbae999210b5cadae9adda. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCACT1685649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35202e72e18492173b25062c07a7d207df256ffc9322033ea3ad957674a90c19. 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/TCACS1662050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18fc2ededc2f1409f68ef08a62ef379cccd21324ee8e7d93eaef7ef0d0709d4. 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/TCACS1662060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743376d6ba143ca1db8da4838da38a7a592ae251f3355b433cbba81c1d74aad9. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCACS1662064.