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 0xc896628e1c8ed4d4ff9dad95bd1c874c98c3c303828e9af212f6aca21c3d5860. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEN400823715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b95ee9f4ba68023738f407a9052372da1aa913452014733c07fe54cce42e09a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEN400823712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c5c908b33ded60631614f42ae9f04b738ff83f06a836009a0a91ece42eeb13. 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/DEN401229001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a31e60cb8e5ad789d68b900601dad310b2b8be5c631390152f8408115767e1. 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/DEN401229002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa318bdd5bb589d93164c8714d2953e8db48f3354c3f83f827836c1af2546a05d. 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/DEN401229003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b7f658793deefee265cd3bdbef9cf4820494748ffd8a6c80d6a9b8400ca5b6. 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/DEN401229004.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339e2b08cd2f52b589f6e3a4ef2a274038dbaa21a56a518cfe47f6ff7f9fd361. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DEN401229006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f53c56e2b4f479c9cfab11626926f0637392037e329278a1a265363984a21cb. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEN401229009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7a57621764907316dd2c27716c3d3e1860463deeca6ab07d410f26e8db9222. 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/DEN401229011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa743fdb3b8c685b45594ce8685ad752150651b76619c7d76aabb1dd63e5b982e. 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/DEN401229012.