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 0x2c531aafe8bcdbcf189d6d5473d72b433293d4545171458a39a3098e6ccbd4f8. 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/c1baedba-6ab4-4238-9362-5eb59f1a6ce3.json and https://artists.proofprofile.net/proofs/artist/c1baedba-6ab4-4238-9362-5eb59f1a6ce3.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 0x9e4a70f35b27eb56087e931bf7d33617819b87fdd9eaa8ac7a527f997225b55a. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:37:28Z), 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/GBKQU2386615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4e404f2ff53513e4d682b216013a02e160d7746fd4063af6b3008b4b823033. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:12:02Z), 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/GBKQU2386616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7411fae67f2416d81bdc9876e79205f08fb6fe9ee5cddcc1c2c2b4f591620e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBKQU2386617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc2deb634d4655f9599c7afda47965bc64e8098ec033b0656aa316c190fb933. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBKQU2386618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078e39f7a2d3d49e05f588e90901d541490cdbf06b8fdb1fb536b3a88d8f69ee. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBKQU2386619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0825c48653003bcd505124d37ef354c19c7f3cb12fa18f2bdb25ecf8ed7ffb61. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GBKQU2386620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5651cd29f818880485c6ed9b11e11b6768a9fca4fc5ba4315bc32aeff04c2ea0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:37Z), 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/GBKQU2386621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e22463106a247c0bf8898579f8b55d73abc39fe3bcfe92086efd0fdaad58007. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:44Z), 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/GBKQU2386622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d56969b3685147d85f84897212c5e318bcd779e6cbca1817d6d82876f5c58d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBKQU2386623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99a95ae666cad7ddfb79a6eace6fc79bbaaa68e41765080842e41f67627a923. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBKQU2386624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92140d6a722b998efc2a5515f3ca21ed98f7e6ae0105b17022829a7e2b1e095f. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:20:07Z), 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/GBKQU2386626.