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 0x8c25e4a8bae226fdbe6481b432288943b9e229cfc0d788bec0bd27df6a3af8d6. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/764a39d1-dcd7-493c-952c-7addabfeed97.json and https://artists.proofprofile.net/proofs/artist/764a39d1-dcd7-493c-952c-7addabfeed97.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 0x6155b85c0acbc8249963ca7c8796fe12bc23fda58357f36bfddba8a0793f4696. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ITI291507401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde27416ea3e6c60d5e68b0ca710b2d0b7b6058f624512c137d16db1d75d17a44. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ATN262103402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c660f87ef72f8c9043efc7d5c13f02216ec0081e41e62071762f1c9e2c8bb94. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ATN262103404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e508e41095b63db5aa9d0c4ed551aa297f8b2a343dca97cb963fecaf76fe274. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/ATN262216501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6836e377b4d481e850c39fcd7756f250abedb11777654134d7d0db6c6fcfe1c9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATN262216502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8314b7a2968a091120d60fa5e6afafeb1870c6f819ea2477125bec7f9a4553aa. 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/ATN262429301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc082250ffa55afa493d1877df11286aa0fe2cb6e8902b15d3b2bb3fdab7a7a56. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATN262429302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec1ff7174c68ecb870e242ba758268e0ce8aee2d9958321502ba2bd5edc402d. 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/ATN262429303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3439bbb389b74128ca00f2b1db3cbe9edf84320ce9a93348d9fe0f997e6ed72. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:52:43Z), 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/ATN262429305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fef020f5d40b33ea432d24f202ba591a2e981971e24abd43f7c1ffbf292ba4. 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/DE1K12512101.
Kingdom Of The Hammer King (Remastered, 2025)