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 0x29f9441793a269615d0f991254c1ffd72e4090e41ae7b51c5ad15b007aefa2d9. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ea575f4-1475-4722-969d-59eb5eb034b5.json and https://artists.proofprofile.net/proofs/artist/8ea575f4-1475-4722-969d-59eb5eb034b5.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 0x97b0d8ab6178543cbc09ec8de8048c40f7a2dbe71ca086ac4395de417ff8d079. 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/USDHM1605105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc19bd6f2cda940f726bdae5124b1ff1adc76e59b60fefabf6723497c98dc8d. 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/USDHM1605108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29acc079f9b2b47f49c0b27d356a705af7385845780d72365cee0fd9ee0a05e9. 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/USDHM1605109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4d5a9058be9602e0b0c5063230156a23d078abea946ab38a9a29dc1508f0d8. 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/USDHM1605112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e95c6c8a269246c134ade6c7309582bffa78cda9d58e723a7b5bda2deb3f96. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CAHQJ1902535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580bf96943c333c50cc8f1a70e8a282c59f36ecff615ef378df9983bb550cfdf. 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/CAHQJ1902538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7a5dbed607c18856d08b4d28d84272503e471c18b68c5c7c0195d2bdb8353e. 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/CAHQJ1902553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9794b954643f9d73810cceb8619ba19a3f816f8a4c41eba0c4596892054d8308. 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/CAHQJ1902558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee01c7d80e86b84f87569a6eb179f379d9ef0edc2245e0ea261c48018218c8d. 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/CAHQJ1902551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfc164fa69ca2944e4a7c5171f7470e2c5c6501861e5168c1d0266a82a5d21b. 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/QZNWW2391772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d89b26ddbd2870e83d6227f87f2a33d84c812124c399e7f7f387133a028018. 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/QZNJX2390268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759b08667d6da38075062297a812d6418be13b73e02cd3b2914adc24c39a0893. 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/CAHQJ1902651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdecc0cd07cb596031be79658b7147ea972d63abd32b3752670b7cd3bac6fdd. 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/CAHQJ1902657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8f43bc7f36aea4a3636862942d14f7f63f304f153439d61f1ae629e9684b46. 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/CAHQJ1902660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60d3de156eed427259627333537718acc505990c1683a578d62111d43d316af. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/CAHQJ1902665.