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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b91ea60bca4617206f723e487195d785291eef4f0b81d0027b6dce66b0e1c34. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/759cb112-fb4c-4be5-b0dc-af9042586650.json and https://artists.proofprofile.net/proofs/artist/759cb112-fb4c-4be5-b0dc-af9042586650.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a60129422a64e54c5ec10131a20cac0261233cf58c33506227ea4805bb401c8. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZES52546625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d52bec77972a33e2bebd5aebaf561f9d29fbf71d88e664718c5303c46dde220. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJN2574773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ba29aeaabefa1df9fcd1c85472f58d9b5fbdef568ac1760159cfd16f86e374. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZES62534766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750f4c8194aa3c007ba196282e1fa91e18b4b112dc64c3cd429c35615ede9131. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZHN32576482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefc743ccdf9dc6de97f55b533c291bfcd38f0abbc6bc8ae9a7d116cd4834cec. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/TCAJM2546707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b7f1dc3b37bd311f4c2a616a119e834103c6a4cf5e6fa5ccda255657f84d03. 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/TCAJN2546799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14538fae9969325892bc06910482aeef43538ed15d668912184a4f2ca907da16. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAJP2513077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075eef1857811d6ea697f8051a7248645d2756225412ef67b478f6f95eb6ede3. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZDA82589675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabc8f92c5270c1d451933d09eae099f2923b3d536b8d0e61d0ab88da8111e17. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJQ2591217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89ca950e399af2b4349f85030fe06ace1f823c1f30024956006776049343e41. 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/TCAJQ2518656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaddb05e2ee277b05d58d7496addbd8d6cdd14b374d35389dbc61c2703285e22. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAJR2580249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8bc64c72cfa8053406cee40ba2376096d7e4c28c2145dcc29adf3893296d1c. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCAJU2568927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f63d17cd4d77a37e71ed5f7268e65640d5af8ec1c45b4abd71b75d69cad62c9. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAJW2535493.
Let You Go (But Don't) [2025 Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648a29c9b64ec986bb2feee1d36ec9788235b2341810f5ef432d9ea5cb155b11. 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/QT65Y2543976.