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 0x9a2ae0ef5f854b219b42e8a1c205a52d22433a43c0d7d58860ab627876ac0c12. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa7fa644-5f82-49a4-aebf-0a847f5ff3f6.json and https://artists.proofprofile.net/proofs/artist/aa7fa644-5f82-49a4-aebf-0a847f5ff3f6.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 0x680cc3820ce50de7be28a83e9a923c3ea623767272f9c3f3c585877bb5a008f2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FIUM71203308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7ea80bd8c6029fa04643f467e707ca9ae21c184c018040868aae30d66c70e5. 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/FISBA7400703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e57a0479c1fc8e9a2f149f955fea9ecf68338ddeb8d4c8935ef025d496c003b. 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/FIUM71203254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9c5fa91289f0bfa35e962e254fcd4bea72942fbc21e2f24eb21181e6109072. 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/FIUM71200689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70931e532377dc556069436482d3613b255c26a2bd740dd338af6cd4ae659ff. 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/FIUM71203256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8405e6c084049a8163d44e02b81b23a63c3cc57de216dd69c20138339a46ed72. 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/FISBA7004405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a0e7957232694bfc706c905b992926fde85a2cf24b27d2819d9f8dfb0c0b28. 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/FISBA6900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ed901ec0b408ea9db200b2b6090e1edc93899dc1b4e3ea63c6e1250adf24d2. 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/FIUM71200511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94709d78fc7bfdc0909d6e8c07bd18505b078a16c496557289e4a023cb5fbeab. 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/FIUM71200513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f8fb81455777f05132456bcea6c8e98dd5712afe2e1582419a00513034b5aa. 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/FIUM71200519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494e46df5a44088f2d38d451892d286b6f14f7b2fd66844d99e855aadb34d1d1. 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/FISBA6902116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8defb5c1941449534bb5ae61a7d59dde10a05d749aeaef3f62fc09e9e92322b1. 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/FIUM71200840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce818574719a648d90a2caa5e2224e774a38871c963edfcadcfe681bf330f5b9. 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/FIUM71200841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0dde16dd345f58fd2a5875ded0cd1b6851cbd9ce42dd40b10cdfa9ac486af6. 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/FIUM71200843.