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 0x233173da275b081a5011e19cf6efb75c3f4f28d99d9e753a8c145e36288bd8ec. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43d84cf3-6b7c-4725-948e-e6f6be9f9865.json and https://artists.proofprofile.net/proofs/artist/43d84cf3-6b7c-4725-948e-e6f6be9f9865.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 0x540bf0deec0011050794f9e2c444f0399efea59bf8da9cba6ed3e27b3ba4e9be. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAWK82500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5ad4c4a9c8e78b0255feff3d921cc7b6f065891db5063db7dd7a70341bb3ae. 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/CAWK82500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6201eb0e1a65e08754cb90bb1d6f682f72db59eca12bc785c3168f29fc5648d0. 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/CAWK82500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68033cc0333b96397fa5d7d0e3957188ef6bfd277ae77b33eab155828a0d23e9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CAWK82500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbddff3c6c8d12ea9ff320737656120a6d7ce2bd0b697700864bbf313e8ff59. 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/CAWK82500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38acbd0f1ebb24105886e552a44d623c5dfc5fc714d130e4ea8906aec8dcaed. 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/CAWK82500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ef35608dbd91ddfac50125a09828e711665b771601dbf0e8489cd4b8d1c756. 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/CAWK82500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5303d128ded5cca278b318999ecaa171284b1104277f5edd1fcd2a3f787729. 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/CAWK82500110.