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 0xfb2b0115ea50496d9e7858aa5e6e4814c0d1ad8d9d7e1c95f8cecab9bbe8ed47. 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/bf2036bc-cefc-4d09-89f0-93d50fe69c81.json and https://artists.proofprofile.net/proofs/artist/bf2036bc-cefc-4d09-89f0-93d50fe69c81.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 0xd53e3885245b5866c99b53243d1d146cc604d0efe704e5fac39ae89b472d4cb5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR10S2016069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf63614b5342c6b478317f82b1defbaf8ae61e5b005c05cadaa67fb5796e34e. 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/FR10S2016070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb9fc60680688723b2bd6d4049fdd32e11bf3874701a66c3202f269b1189038. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR10S2016071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6887fb4f45f4eba8d76c2560ab5e88d92e0d8f6df989c3829134c48a782e0e5e. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FR10S2016072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804ea5c755738d3d3dd03fa4f875c793ce8fb9cce80efa97d0543783be740bf5. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR10S2016074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fff258d18cc1273ddf6e4c0899885b0acb5e557b2f7de5432440b9ce45df2c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:34Z), 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/FR10S2016076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f2b68706ebc9222470722654d0d594e057d819fcc694136ae943ab77885c34. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FR2X42087242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f2b68706ebc9222470722654d0d594e057d819fcc694136ae943ab77885c34. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR2X42087242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39066b3202b8857f2ba6e89cf995e55e19090db6b8128506fc33a8047f9aa8df. 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/FRX202091319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39066b3202b8857f2ba6e89cf995e55e19090db6b8128506fc33a8047f9aa8df. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FRX202091319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b992d5092cedde42a081fcd853f56c8bea5a24d12fd2e95f147ed5e38f08a4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM6N22197643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b992d5092cedde42a081fcd853f56c8bea5a24d12fd2e95f147ed5e38f08a4. 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/QM6N22197643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef0095e1a92cefc3a9effb982e5646d283f78ff601a9d9bf5f904320f4b3ddf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFME2168060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a905624b42726e3571a0119b4814f6fda45d11261ecccd732a9713fa78e7f6f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QM4TW2236942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9a88d5662525837780c3af277aa7b8f7062a4e3e54aa5d7e751fc3092141f7. 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/FRS182169128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d60ab1707c72a483529e1850e991604cba050080d3debbf3f07dd84671de94. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX202036932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498a9755f022854e86f879698de9c9c5d6833cac3fe80cd86f7ce49a2c9de7ae. 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/QMFMF2013039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dd2f46d2c582859d6f661ad6110a645df9237350328237e789c1133c5658c7. 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/QMFME2076648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb128009f18618eb4fbaf089ac59dcac0e0b949644afa05dea8190e993d9f787. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMFMF2013514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b20561392f698ab52d8055ba029aeede6bb006c7f6f402a5e0486fb8c87a9e. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QMFMF2013642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef0095e1a92cefc3a9effb982e5646d283f78ff601a9d9bf5f904320f4b3ddf. 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/QMFME2168060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dd2f46d2c582859d6f661ad6110a645df9237350328237e789c1133c5658c7. 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/QMFME2076648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b20561392f698ab52d8055ba029aeede6bb006c7f6f402a5e0486fb8c87a9e. 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/QMFMF2013642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e95b71a76e018b6c042bdb86959b01cb87abc47a084af71e41d69f8e7db01b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA62127652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda955c4103f3ed96590f2dbe327d2fc1896fdfb5927d89ec136c2cc4264696a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA62127677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1576819e19e379ba76780277e6fb2ad237b883474c5cb5f19a056b7ae952dd2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22173128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b20561392f698ab52d8055ba029aeede6bb006c7f6f402a5e0486fb8c87a9e. 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/QMFMF2013642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dd2f46d2c582859d6f661ad6110a645df9237350328237e789c1133c5658c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFME2076648.