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 0xc0e65f461987ae32592708c1780ac37ed3f652299c2d7ce16d81e25c5fa8e0bb. 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/93f8d4c7-12f6-487c-bb85-cecdff0dd732.json and https://artists.proofprofile.net/proofs/artist/93f8d4c7-12f6-487c-bb85-cecdff0dd732.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 0x65ee60e735afaea6512d9b65f207a228604683e233494e428386b0ded1b59624. 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/QZGLM2166050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bf94331283947f6e703a285bd052841b576292c3dc739c1c867be2fb927080. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:35Z), 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/QMBZ92189982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b75a9bd665ed70ce19ae5891de2df18e08bafee6b69ea9a623115f4af92e284. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM4TW2208872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842afae36166ebc23e0d14a089adcea0627b41d9fba34b47600fc91b9f556544. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QMFME2228061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18d0093600a10a19dbbfa9b2ccb869b00576f00eeb8e9913786defa5ae49fed. 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/QMFME2369989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24a156ac87340cc1808098d6dc26da8f701ea86af91a9886b5056e21a6e7fc1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QMFMF2378396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18d0093600a10a19dbbfa9b2ccb869b00576f00eeb8e9913786defa5ae49fed. 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/QMFME2369989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3598b98909cfebdca8d9d260edd7ef8769d46fe3989e1977d350ef2552b6349c. 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/QMFMF2378407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a75debb7306db5e5d49af53111e90834d71c443fac820d6027841c8180acfb. 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/QM4TW2432993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6564f0b8ce91f7c4903f88af466700c4bdd138b4abb9e4269337500cb108456. 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/QM4TW2432998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb0eb7993ed107989ab7f474d6670bc0d4941beb267f7a9eabb85e872da6099. 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/QM4TW2433006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf260cd07297ab2bdf60fd67f235ea47f4acf2d5ae2d19533c32e83ca6e9ed88a. 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/QM4TW2433013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f3ecb35770d825c7a2f7f25cec6284b2e300881eea72764bc69f5fc6ce6622. 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/QM4TW2433028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18d0093600a10a19dbbfa9b2ccb869b00576f00eeb8e9913786defa5ae49fed. 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/QMFME2369989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24a156ac87340cc1808098d6dc26da8f701ea86af91a9886b5056e21a6e7fc1. 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/QMFMF2378396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b10afe62177579d1658de12ef682f22600477f1e5f7940a4f163e7803b8129c. 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/QM4TW2433037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf369e184e2638be4ca75c39aa4bf11de1fbdde49a348f7c5428a87c42079a6e7. 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/QZGLS2524809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e43e9ece2e16fb9dc34ad48fae577939e3c3ae3fea535660722975ed580ad52. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNJW2563515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf369e184e2638be4ca75c39aa4bf11de1fbdde49a348f7c5428a87c42079a6e7. 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/QZGLS2524809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319daaf652f9e7d515ddfaf08760316fbb8331bd1b41db738a38859b169d0f5f. 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/QZTAZ2227660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d50625a783e0ad45c183af10dc4f92ae1a362608093e1766ce23afcadd7aee. 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/QZNJV2429727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6243048b08dacb6f5b7f19c29a5dd10acd7897dbf6a6431a8073a74080c0327f. 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/QZGLM2395088.