1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc0232ae31bd32d4c0fd3c8da1da0def5ef1ae71bfec485cdacb707dc134079a3. 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/66146cd2-2b63-4cda-a8ce-282e314c7c57.json and https://artists.proofprofile.net/proofs/artist/66146cd2-2b63-4cda-a8ce-282e314c7c57.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 → block OTSBitcoinBlock must exist at that height 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 0x03a3e77a0adb5c863ff19804886f43a1e4f8f79e651c9015aadf8563cfdadc11. 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/PLH501200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d160d999beb59261be7f39ea8126fd9f2a052372366fad637d0376e216cc412. 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/PLH501200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf722ef2cfa3662eac1c51c23cd522bae03467fbd778e97c0af6a7fe956c71f9. 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/PLH501200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b66b789ee76cd946f8998f5b73357c366ffeb85b0455d955261a8efa3271e7. 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/PLH501200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41774d69718aaa9d15c0d4752656ea2d6373dcb4095a9fc6a81d36af796df84c. 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/PLH501200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a368b0183d1389f40587be4e2d2b427a4722b2852f88fbc12e29d6d8238cb4. 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/PLH501200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffeb8f017d6aa834275322f9ff61ca14c311f6536a112dc0a5353c67243be0f. 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/PLH501200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79198fbe77098ebc5d1955cbafb586f160e7b6ab5599f58de89ac6310a5c6a7. 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/PLH501200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd170dee91dd274ea7bd569a6699d8add362bd94eeae71d0cff475111bd58ba5. 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/PLH501200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842a2ea3c8a362c189d013eb4156e74a9661165c9ce5fca122c5608eced24c1a. 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/PLH501200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93c4cc43c3d8d48b9406c56c5c33a6b6df4b8bee30b6571313452a6d93443ff. 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/PLH501200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755f7f7a56273de202ac4539e8cf0590ab0432a94bf6d30f2dac599d8a9eff67. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/PLH501200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b4f45e651d4b7ffe114fa2b1cdff597c939b706bc769543889411f5844f083. 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/PLH501200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa9cdc1d39dfde75c61165efb746d558b56a5a66a02c3c109d12833fba8f971. 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/PLH501200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a3e77a0adb5c863ff19804886f43a1e4f8f79e651c9015aadf8563cfdadc11. 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/PLH501200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d160d999beb59261be7f39ea8126fd9f2a052372366fad637d0376e216cc412. 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/PLH501200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf722ef2cfa3662eac1c51c23cd522bae03467fbd778e97c0af6a7fe956c71f9. 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/PLH501200005.