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 0xec336c6b98fd213ee02b3d75e8516def5393bb2f1470d508ce84b9bd83e905ff. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06324c36-e401-49a8-9919-0b57bde0b972.json and https://artists.proofprofile.net/proofs/artist/06324c36-e401-49a8-9919-0b57bde0b972.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 0xa324062ab5740bb99dde3c923134e6feb318f48c56c4d7d9ef22e0c164149710. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEG932204410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771d7b091c90d7bbeed6485560b5fe34b095fc003c7863adfbfbfc7fb494c941. 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/DEG932204415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17f3d29dbbd5c7a49ae9f9d54e0528c69dbebbb488cdfd47aeac086396c11bf. 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/DEG932204414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5957736d73fdac326b476d37d75673d804aaa24f85547ff85f7afba92d11b101. 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/DEG932204413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87055e493a9835a167b702f3e0d87b9c34520b4e9978bf9f1d67d34885317f13. 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/DEG932204412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd17b342b90150d8c1a4cdd610d782f097815c37224fb64732748ec5ce19795e. 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/DEG932204411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17f3d29dbbd5c7a49ae9f9d54e0528c69dbebbb488cdfd47aeac086396c11bf. 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/DEG932204414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7de41baccb3591ae97c8cca374459a5b7acb563818697f3a8976507091fdab. 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/DEH741919641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d45910cf99002a3d434ff13e4159e8b03fe6bb9170e766326c2352761df3b3. 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/DEH741919642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a36d4d8c1afc44af3bf60d6ac18db58832b5623e4a08588118f202b7e31ef0. 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/DEH741919643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8609d744d65ea661aa228693b05079dd9914f96940b6466556e30416bef744. 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/DEH741819735.