1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579396f2f237f2b9fc813e847ee25500dcd151731495fce613126f1fdefde65e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5aaadacc-e147-46be-a408-94ce70784634.json and https://artists.proofprofile.net/proofs/artist/5aaadacc-e147-46be-a408-94ce70784634.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3121f4031504dbe98dfd839fe5921a91a8f3bc76898c46226073cfd1bcd733. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:49:52Z), 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/GX3Q92536896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc805916925cae060dfea3244d39dcd6c39cdd3371cc28987e43208a62eece7ec. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX3Q92536897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1d224f2025fc3c0e6e816ce03b11325b61b6217267fa5b61b3b26cd5787417. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX3Q92536898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0e23b3e97df42b29246cf496f7b0723f72b65afaf4f4d058d77796058e2433. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX3Q92536900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1e33b5c0b6ab8948f505e00ca0a93339d6e35825ad7310eed4db45a4e2ce85. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX3Q92536901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e149e4cd8e5b838ced9ad2fea8e4ddd5434a7f101fd39cd6ed4db0c0240b81b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX3Q92536902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff75e7927201c099c0b6f3e3843de57310af4e95a7098e9a8b62f677235c711. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX3Q92536903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3423a6800ea9230914799e6610fbe3b60feb4f7ff5c9e406ad325df9193d2f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:00:18Z), 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/GX3Q92536904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02cd3b52de86861087a7cc28c73b37cabf76c747348783341d0c6c0dd3545cd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX3Q92536905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ac0215ab9fac4b660e70fd9fa0f0d49cacaa8b644c912737896ffe02b16f79. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX3Q92536906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb7757b70fc6a1f99d488cbfa14050020c1cc848f96559bfa65953cdf05ba99. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX3Q92536907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd861b03119fd5e6a18752b3e12cb416f9cc71589abf52e15598d034da01a577f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GX3Q92536908.