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 0xa26aeb6d078b432a149542651faa38dcaf4783d44ea11b7daf56c0da5100e436. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/485963b8-4d7a-445b-a49d-0706f9f5e091.json and https://artists.proofprofile.net/proofs/artist/485963b8-4d7a-445b-a49d-0706f9f5e091.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 0x44526f1724be4ef2e8d0893bc9eb794655936ffee408d2ce1accff8831df876e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM42K1988601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bfc1be2da7b32df72cbb32a8a8702ac0fd4bc8b8d93f174dbce1870aefa18b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM42K2065804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22794968dd8690ab5a187880a2e504cef595d6c705ee2ba7a31d2cebe27ecac. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMHP2003869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22794968dd8690ab5a187880a2e504cef595d6c705ee2ba7a31d2cebe27ecac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMHP2003869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b9a2138a728094f5a48c4bdd151f76b8709634e808f0a0bd6326422fbf2aa3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM42K2221859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ce84b0b74c0655201bfa3ba7e6dfdc30e200d5c4629101a0fc3b3a4dc2c2f5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZS632226006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0cf4a3b89380fd94bbca739a842caed8ab28f5cf00cb4047023631a5737215. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMHL2219293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b270abb1e7ee661940fd3776327b83784d10490875d3a1a8b88d0306267580. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZMHP2323449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f3acb68886f8f0c4deb10edff90fb92c44410b03fa5c3da7937c7c94dd0e14. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZMHK2222921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3818891980c372a90bff3cef0fc951ed7318dc56212309b0a2754cf09b5a448. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:29:59Z), 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/FRX452501523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa791a47694e779612827a53b20a97a73c92ab35f713389d74b113f915b97bba6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX452501606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0e86cdb41ce7f9a26ac55dd05ebebe5c936e4ebb13dd5e8397ff2babca417c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRX282553954.