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 0xd464f1547f74adca211357df90771d571d4596f013c5861d0916e8f08a1521a7. 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/12430c8b-305a-4b80-b0b2-ae6ebd7e8bf7.json and https://artists.proofprofile.net/proofs/artist/12430c8b-305a-4b80-b0b2-ae6ebd7e8bf7.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 0x6190d01f453007b31b7de93bf200ccf060224b4fe3f05334e1392fce0ccb985e. 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/QZGLM2338788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7ec99fdbfa5cb19e93df2227d6feb0a4d4112dd170489c2fb04373f7ba6b84. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:00:33Z), 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/QZGLM2338789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdb79588c0c8ab9ba1a125ad2c0ab44b866639173bc9b4e53ba8f6bf99a600d. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZGLM2338791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b9d5a0f707b7c9fc370698fecc2b880ed88166470341a37839142d29e5cda0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:12Z), 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/QZGLM2338792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19220b1692fd2904b2b282f515eab682a78fba73a5b8330e7aa2ebbc019d4f3f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZGLM2338793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d30950de298b4192c17a4f33cf8b0c0ab3efc7e6c5986d6392aef1051bd50b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZGLM2338794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546fd393528854329bf5a169f4784edb0cd50944865213011d215764260b6eb6. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZGLM2338795.