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 0x5dbfdddabd248e972b28cb72727a30a5eae498349ae0b121fd9e292270285a15. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76e9d134-1983-4889-8995-5e1f716aa9c2.json and https://artists.proofprofile.net/proofs/artist/76e9d134-1983-4889-8995-5e1f716aa9c2.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 0xbb4bfb3ffc53ed508e3e3a8f077c743ba23b49f55a49aeb0e37613c0fa3490d1. 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/HKB892009046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a30f5bb7bc3b46a76aced7cc29b4395c417d9fc95a9d918f174426b054c7ab. 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/HKB892100606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ea43c5e824cdcb21a9e8ea121fbf9a4affd2e74a34fde2bc007486b1d1b52c. 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/HKB892100626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c68aafe80144359a23c4d8c35cd978f3daaf238c0690626dadf64d9993e5fd9. 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/HKB892100665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4457bc590bb1feb8d224c560ca8596b4161aaac1cc1fc1e8444bfa9cd15a3a1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKB892100673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471025543477c6d66d219a1a34fb0849e80b8f30ab6043bb80c3e8ee74af1b33. 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/HKB892100681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db9f901f07896a1eb0f161424f2cda146c15e83bcdbcf5705eb2972f5095853. 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/HKB892100689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb684484c921646a28f03269d74bc23bfee466ff8c77ca304a0903bc39b9fe9ff. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/HKB892100709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95e6317d1955ae50e7cb2ef7713531901c2debe2a429905b1c520a4afbb96e0. 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/HKB892100007.