1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x5c8ed83ba3cfbd126a32422fdc3468d5fda03d4bea475f7529c925d028959f4b. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79a3031b-df85-4e90-9c3c-39d777d88451.json and https://artists.proofprofile.net/proofs/artist/79a3031b-df85-4e90-9c3c-39d777d88451.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x3af953c34ba7bf0cb73517ef894a069c83108126a7441bd437889d0f7879c65c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA052344599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f403a4304e8b2e275ac128a80d4f8571be2b4b7247114720bbd1b843d2a9517. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UKZGC2308172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2678827a3ed757a64e9eaa8510cb265ff336f9a9161bd4975e1179363628593d. 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/US3DF2427013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7786d77acad16ba4c1a22b50c4a25a52f280d9cf304cd45f5d7b5bf6c77c09e3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMHM2459510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2f84f54cf1de300a116f109222e6bbabe9b8a05afd86eaef634ddf9292353d. 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/DGA0S2438453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa2522a11e4346740c2bd8b05d904dc58e01a32fff9dd8f3c66847cc057bcae. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/UKZGC2501033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c831c88f17db0d241c5621bf0d53349e85ec1412305b841f30ffb5f994c7ca4. 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/UKZGC2503901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2678827a3ed757a64e9eaa8510cb265ff336f9a9161bd4975e1179363628593d. 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/US3DF2427013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a9e5016a341a43a957c05e04e627bbf938d458f9943de35ab181cb607a8dda. 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/UKZGC2502318.
pov: you went to japan to see the cherry blossoms.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa2522a11e4346740c2bd8b05d904dc58e01a32fff9dd8f3c66847cc057bcae. 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/UKZGC2501033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c831c88f17db0d241c5621bf0d53349e85ec1412305b841f30ffb5f994c7ca4. 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/UKZGC2503901.