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 0xab532a6e76fb2175c4a63ffc6a68f6640b9b0dae45b97527ec18ed3ddcb5963d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ead593b-c1cc-48fb-a264-3e7148711057.json and https://artists.proofprofile.net/proofs/artist/1ead593b-c1cc-48fb-a264-3e7148711057.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 0x29877fcf8a1aff4131f1d5d107f9084e1a04eadd1daadb1c3970cf31cb6d6a51. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:26:44Z), 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/FR26V2008706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cd45feb1ef06a7fe391efc12a760dccd5bf0d178520dcafb7db6c92e9af379. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR26V2009602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e858220b9a78e3d7b4d0f9ee5751f455a20bcd39e3d60e54a7cc7d574e8dc6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR59R2164155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9027f5ff5edbe2e7c6cc067c0ea555e76a6318d64b05e2e1c3f5d4cf9ddd9181. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX202131403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5507e3462b39f58f33dd57b6bfc5bb1bad808345267f60e3d8d4907f70c1ebda. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IL7192100704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8561b263d5f82d6edc7213852eb028030ed17a7b567954f66db8541b7e4aad9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IL7192301829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42187fc893091070151344376bb29460358e123c4311533870a9fcfc07881995. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/IL7192401712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122f8429edea9a13907404849713342111a3fd5a75d9e76bc4cdeb0025e42573. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/IL7192500514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54474e45804825f43fe5974fa05ede39772e22a7a56b69620fc80d774f3995d0. 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/IL7192500513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41565c14f67b3d8be60cf740320efd7d5daded75967587f17234060da007e33d. Chain 2 (Bitcoin): anchored in block 957791 (2026-07-13T02:46:19Z), 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/IL7192500887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5f03b1835d29570887cadf8dc12214bc866e950b57d78cbc1a858089ac23d5. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/IL7192501699.