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 0xd45e8037990bd3ef90d205e39d4843876b7eb4f6a03cb123356dafd6b8d76437. 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/3dfa0c54-89c8-4812-a2a1-40f547d12159.json and https://artists.proofprofile.net/proofs/artist/3dfa0c54-89c8-4812-a2a1-40f547d12159.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 0x5d72c8c534bc055e68edbe0b0fe620f772bfa67c0fb345f9e8e65843e149a20d. 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/DEUL11500554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f4e7d9862bc408e48cc8740cebcaed87cec58bdc501ef8d84209c3b28eb225. 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/DEUL11500555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f10c4211d0727fdab978dff9581715312bccad885b0d291c3754d26df82f09. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEUL11500556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4379ff7b5937ab51aa7a505c21397c9fc4100e05aa76cd6945a8a95d861651b6. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/DGA052009975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279766a2bb1d9b5dc4cce6149961fd0cf651c249ae048f9c34cc9ef0b96d4a8e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DGA052009976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad91d543626f53a1f978d650c94ccf903add95a0fe6d41d010a42aba7f2068d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA052009978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7b69df69418a67af5dadaf880876e2dcf8c00efa8dda4979b689b6eceaa3a5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA052009980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0528bd2694a8253ffd8e0d9395b56d99c6db44c4900ee8b99dd2a2dc8795cbf6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA052009981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55133e6a093092574f427f798efe2d0023df360088634633038436ac0f502373. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA052009982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92f4f1074a19208d452e5f7edce2452e15b829c0761bf2b6f7a5a4fe12b0653. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA052009983.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cec5a789d2f43df54ec6fe6b49e8490c7a6290ad4b0f4385b3ee3bcf47c87b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA0R2304502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aee6fe5e933a72e429ba52f6a30533a06861c9f1755dae1db7e049739df2655. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DGA0R2304506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144cb75a8b9b91d315c57cd09b06d40f5215f37536b2d8d72f140a0b5187d909. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DGA0R2304507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd428cc52a13992e0ea4432c20c4f419b2abe8e36824b67ef1063b9840bd9e5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA0R2304508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158fdfd708597723f741faa505883bef067c744261e32065b181316e4fd65e06. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DGA0R2304510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3cf1e88c7650cf9890255d7891125467cd731e2522e9212ee0fc5b69cbf938. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/FRX202466893.