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 0x8c5076fb275d986ab5b5bf43e40924bd2ff04c62e90181c89d282302b06c84da. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b216368-0f51-4427-91ee-3406660c8863.json and https://artists.proofprofile.net/proofs/artist/1b216368-0f51-4427-91ee-3406660c8863.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 0x0d3a25c2bad75b5969c6881592632766678124c7c6f3fe9df43f1184bd0e4984. 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/JPM902300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d35dfcf8a1cfb9fdbbb40700a69ba961587e4b6cae9e9181fd6620a00c13b17. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPM902300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae3cf56b422d525cd7fa1da9edbb404480ddb0d72197b9d16f4dc877f15cdb4. 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/JPM902300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd5838dc33960090fef27a49738420e88ab6eaee4b9f7c14ba6b37b8a7cc5ac. 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/JPM902300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dae28b4676999357441d7f1aeadea7a3840619501db939c5087f32ccd022b3. 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/JPM902300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d35dfcf8a1cfb9fdbbb40700a69ba961587e4b6cae9e9181fd6620a00c13b17. 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/JPM902300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710b359279a2bedf1f90319a689d644307f93ea038b1afd2100b1649effda663. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPG102101327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e89c2657c4d7ac67abe1e62797e2d981aafd33e1a6ed58f46cae330a121b06. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPG102100937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e27905e17425649bff24e5bc436e7d6784558f850c3f62541c82de26eacd2d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPG102101328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e89c2657c4d7ac67abe1e62797e2d981aafd33e1a6ed58f46cae330a121b06. 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/JPG102100937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3affd1a8910c56f4ed385960e32961a58d22d75fc02bd7f5741d25dd77ad8e06. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCJPL2069738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792d31c141bed616baadd81437ae75fda8620c14b7f37160cfea6eaad4ad562d. 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/TCJPL2069783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3daf0a633b2b83e0352e819606bfa1cc4b6427041831a050c7ad3a4d8182247. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPL2069799.