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 0xda01237c71b339e3376a66a2e50c5caf737a0ca0fc4c1301e93d42d16b7152fb. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24b8d02a-18fe-4555-ba30-5b044e0139f6.json and https://artists.proofprofile.net/proofs/artist/24b8d02a-18fe-4555-ba30-5b044e0139f6.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 0x7072968c4e12291a51fc1b340ecb160f745ad5d27f590905dcb59dde9e3c465a. 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/HKG732107482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b08f291a078c0c96a89e0e1b43a37fb978eac961cb1f41a27b718193155d3b. 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/HKG732107483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c14e1922a40c788a9ee4d79b6428a25ad89027dede7e6ce040461306acbbff2. 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/HKG732107484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e928f84f9ff2b0f7abb382b72612480c60caa109ea05f9f240947a71b3e24c. 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/HKG732107487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c98c7f5703cab8e89d058a0bd50ba95700561d2d6fbf61d8056a60e25f9658. 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/HKG732107489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ba4976aab49557c3b6fba9e50a714276ed6c9637e24aa2ef4950094fd5667c. 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/HKG732107490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4cf4b16acad70e84dc41eda28063b2ebd243f828bfdf1ceff9f6ba8838a959. 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/HKG732107493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8c5905d98795a3bea213a2e92005716e862504847cb327ddb8cbde8176255d. 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/HKG732107494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b4a90fad4e5eda95b51445bc8eab0e0db4e011a98a57f8bfba8cae8ebfb5ef. 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/HKG732107496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b843f80ffc88b9ddf03ec2b33e7b2be682299d35b31b3b94aab6b3e3bcaac6. 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/HKG732107497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a5dad54e52b917fc7fede796e0229ff924eb728a33ad1a935707fca82110fb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HKG732281959.