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 0xad4adfd1ce6e35e8267c366570d5b9313e2f8dcc81959219744c6654ae401b7f. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15399a6a-e386-4b60-ad44-047952692f56.json and https://artists.proofprofile.net/proofs/artist/15399a6a-e386-4b60-ad44-047952692f56.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 0x382aecb755b2bd06ff4c152858fa9e53fdcc88290e168de224661f1faf0ad18e. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZGLM2416181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fb6e02a213a598dc78151bd6ee74f265eeb4c9da1203b13c79f868dc63b09a. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:44:02Z), 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/QZGLM2416182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322b09c0de9f4e6457bd6aea0194180f448927080aae30907c88928771b598b7. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZGLM2416183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d6fd5207bca1eccb50b4c79852fe592c9e42b54ae5b6b2c061eb4a53dbc546. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:24Z), 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/QZGLM2416185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cd629923e383b0d2e4c857b75265232b13416b151f57f6de608e216024f9bc. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBSMU9277593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fd5c5550c6fdeab487a552a7743ab13ce60179b44424af097a842ad9d001ca. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/GBSMU9277595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c9c370c679de648fec9c2e01403b74e46404b4cf5eed6d8fed2700d35662e6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBSMU9277598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc1f697a9310ee5499728a9544f7b556ce56abf9e63f0b56971c49f169398ce. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBSMU9277600.