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 0xa71ee650971c59306c72bd907e7e18e0d9db0a94167aa2a2b3a63e68a1ddc498. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb6aa44d-338b-46ac-be0d-e3db085e6660.json and https://artists.proofprofile.net/proofs/artist/bb6aa44d-338b-46ac-be0d-e3db085e6660.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 0xf23e9cde82dc544aab6711c0f8642e0ebdc170287271c39f633767fb172e8e95. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBHLW1903752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab047c1fc83fa2183f5c358856feeade9117bdce2ac34a4588b8e407374d82a4. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBHLW1903759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ba91b43c154453a1c344c3cf2c25e084eec5a30ab0a440b52771bcfeda56c2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMDA62497527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8375d4b6dbbf7b23a7b0859bd5dcf992f3690fd60edad62fcba626af4fa514. 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/QM4TX2510715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ba91b43c154453a1c344c3cf2c25e084eec5a30ab0a440b52771bcfeda56c2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMDA62497527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33203b912c094537fb28a1e4ec7eea66eed1dfafd0d24c7e2f8918fffc548349. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:57Z), 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/QMFMF2427076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8649bd705680745a1b712b9e1de38f91cf4a74cae339c9d0fa7519a8226cef4c. 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/QM4TX2510710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb072286fd76f1493ca0dc735a1328b0bfcdc1c1f0a10382541ac6589d2b6fcac. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/QM4TX2510712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aeac24fc25fff4d1972ac75f74f945ed567295e76258d2ea4932dae4ebc51b. 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/QM4TW2569500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9b96d09061b28b0f0fa6f2ec22e156ca143b749fbb81b3858ed110130b3462. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM4TX2510713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8375d4b6dbbf7b23a7b0859bd5dcf992f3690fd60edad62fcba626af4fa514. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM4TX2510715.