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 0x280f3cd9776ae73966ccc28352b865e0120164c3983718e5766f87c734b0432c. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d379eb6-91c0-4ab6-9706-4f0f84ded3f5.json and https://artists.proofprofile.net/proofs/artist/0d379eb6-91c0-4ab6-9706-4f0f84ded3f5.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 0x3beecbf1754cca77ee62fb2a1ed72458fb26c79ed82c53e935e54507c7b20432. 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/QZS642475576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44621ca9aaaf8cb269955dd32c6af9b13f5642ced69c609f43bb48ddc0652128. 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/DGA062472708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbcbab06f5a49ea9884b9c038f7f7cf9de04b1f714e48fbbd82363014c76613. 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/DGA062472709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3e43650c669bd2b1a7f1fb90412a1d229e1c4d36a456e54ef558d76cc869eb. 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/DGA062472710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf319a05ffab827738271239cfaa4c9d3a9f30864f2c1a3da03834f52b53e44e. 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/DGA062472711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ac3c236573dc49e87dccd3351efceb246787c9de794665f38dca9b71578b8e. 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/DGA062472712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29aa3970437d8f7ddac83f5985d721585b9fb3fee9b302142bc55a3c4602238e. 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/DGA062472719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb472c2da53aa4a45c653afbc42fc3d51f2e7a4620b832b09a490017a9d340f50. 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/DGA062472724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf8233afe2192700248c66635c9cbcf378a821d492d9bef20137bbf6b2605c7. 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/TCAHE2392665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fe7710ea952d95672806984433ff10a77f0ee5c7a96592cdcffa4e6c51a983. 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/QZS652281143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42117536885c4f70c3e289a21aa87d0cd194f9e7cd263dd6df67234469117e9a. 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/USHM82370587.