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 0x7b7ea8cd06671b2eb58481d42e755a00cb9a6b29c997f2972aab8d4eabe66766. 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/a77fadae-c824-4040-8e65-71587874567a.json and https://artists.proofprofile.net/proofs/artist/a77fadae-c824-4040-8e65-71587874567a.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 0xa5b13ae12525f2591d97f2b3f54e085811b45faaf08081e3174bf7553ead5801. 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/HUA612402461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cfb640bab2209af9ff584a4eae89d904ac3054b796962a39f4c93bf07e599d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HUA612402967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950850f3f9828f1f05c75d850cdbafd09c15a4064a08ecab625e8f5335b2eac0. 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/HUA612403330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a62e6f06de653357060065f72cdd86a05417de562964fbd1ff07647a580ac88. 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/HUA612403504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996ec198595d455301bd0abd351f19b6f13275f4270a8765cc450c56383f0385. 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/HUA612403505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9344179ef559ac9fdb909a3d73e568d52b7d757a794e5cc2284d01f97f4447. 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/HUA612403506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba5bc023db1fb47d6028e4e074d65da09f75dfbfeb2ae98e1e293975fc938b3. 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/HUA612403507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cfb640bab2209af9ff584a4eae89d904ac3054b796962a39f4c93bf07e599d. 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/HUA612402967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4692d758d87703d320b6fd6155d66cf1a290c0aa0fdbd43d21cd072fdd27a0. 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/HUA612403509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b13ae12525f2591d97f2b3f54e085811b45faaf08081e3174bf7553ead5801. 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/HUA612402461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816f0d68709c728a71215c1eef250df4b92bd50e5258b124f688078ec0f81746. 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/HUA612403510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950850f3f9828f1f05c75d850cdbafd09c15a4064a08ecab625e8f5335b2eac0. 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/HUA612403330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f897652ec89f838d7ccd41e55c14c50609f97b5e78809c3afa8aacefc4a58b. 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/HUA612403511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9eed3b2df6db25a6ee43b58cabaefd9199651d106d96e0da70054d22faea3d. 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/HUA612403512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d5dd31d8cdc6aa0a79643e2761e36776ab9e73cb943bfb2efd67d14496d770. 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/HUA612404658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e4b316c1114e398e86f0737c268b8ee026190785ac15bc7441b5f85fd2aa62. 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/HUUM72200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95010a623074ee1442317a09318088fe90310fb659f91b8654e1c5808f5fcfa4. 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/HUA612302087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df503848ca962add16a2d134299b44d70fe4e7602ea78d9ebc1cb18e49941d5. 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/HUA612303583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e57329c61687d28a504f63cd1bebc2094a042b457e62db9331f753abbc4382c. 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/HUA612303586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b036fdad241935a6894358127f0c1b38fc41c89c3411d8cf2546d6e79709bf. 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/HUA612303588.