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 0x07c41e8f927b30d0fef92b997e138f1ecbd94eae5ae996d2cafab91d26a9253e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95a8e5ac-766a-469d-9c9b-d856a0563920.json and https://artists.proofprofile.net/proofs/artist/95a8e5ac-766a-469d-9c9b-d856a0563920.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 0xe98b10c41fb217f27de871272c67d8f142e7e56079533d807d0254f1c7577739. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBSMU2445066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a60b1ad4daf6999fd5fc2bc85afe27827d96334428767681dff591a9b1759f. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:47:38Z), 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/GBSMU2445046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3247239feb8ec91e1517b8fb1cbbbc4b33a6a1ac5f6c8286c83da04c639fb5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBSMU2517135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95029e809b23b1c476271b1072b9d42213c2336f7a709e0227cf53de7a5afdbc. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBSMU2517138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe971b511d2dca7f6b86449871d3836da05f28c48a40f75b3377cf14d2993f4c6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBSMU2517141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547ebffcaf5a0c73025872ae20c7100b6c63311f256f8f92d9ef4eba6e35dd7c. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/GBSMU2725448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7c94d36ab0b7cc53e1d7546cbe14e87d30a8c83cb9f767d36e23ccf05ec510. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:06Z), 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/GBSMU2725450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdca59c1a70920d9eab1ccce3b0e07aa6deee2516e70130434edf1171434120e. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/GBSMU2725471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bc4c0f1f75fdfccfaf3d75da3e29219606b9833e2710eeef1e57bb2e40dc12. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:03:48Z), 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/GBSMU5275675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4e8d2c4e36e2fc3dd2de501590e8fae6cbd7a817b957665b8e2e1c33a96b0c. 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/GBSMU5275687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf390480deadf0fccbe8cf17cd4a18a5dcfc81a9394bff252d4910e4870e90ebc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU3595005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31582267b2511b275189b73b01bc161909b5fd985b0a55f8a1182e0fc51baa5e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:37:03Z), 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/GBSMU3595017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dcfb344b2d1afbc3c22d8f1920834b3c5d9d82d9c1263d7f59050f5edfadae. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCADM1894639.