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 0x31b2cb1213f159c042acb62da43fbaf30f8f78ff26e6cc47ae1fc4fc7c555f66. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9494a67-9305-4a9f-bb36-92a5e5f72a56.json and https://artists.proofprofile.net/proofs/artist/b9494a67-9305-4a9f-bb36-92a5e5f72a56.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 0x1173383aab3fed9574456b6b400220726da9f07d90c1ef2a16e958751d5706b7. 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/QZES52119082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7602ce264802b3de35ddc25c497ebc9574d87f86f3ef3c5a4fd7853e5651b5f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6N2127499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4354e76df7856886825e9595ea9707f4f196615ccfed4b41ee53b60f87543be2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FIBOA2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d8ddf998e142df6f49f4f29673d0aec23ad3470761600ed52e80e0c3830d8c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FIBOA2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0ba9882bb34161395ca53965ba4c1133f82e1b9fc474d31ff2f6edbc6ef05b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:47:37Z), 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/FIHYZ2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876a82a1ebfc3b00ec7c9895869ca46b7fc9c52e71216555b825edbd283de9f2. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:52:24Z), 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/FIHYZ2400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7dd7f1eb99137eaeb0191f35ea48da8f5be8910b9822a986c53798921a2977. 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/QZHN82210602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc100405aa965257d52bd8d85d89323606530987a99768b2d00eb1fadbee5114f. 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/QZFYX2264786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabf5cf66fe704a7dd3d084f11ba253f7db1f26dc8871295c9e4864434a9ce2e. 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/QZMEN2265383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc100405aa965257d52bd8d85d89323606530987a99768b2d00eb1fadbee5114f. 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/QZFYX2264786.