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 0x5ddc024541324d4022f56df1aa46e87cbe243142fd41a98a31c6dfd99e72da59. 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/7d08bfdd-bf07-4534-9fa0-744f5fda3bb5.json and https://artists.proofprofile.net/proofs/artist/7d08bfdd-bf07-4534-9fa0-744f5fda3bb5.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 0xd0e5e3202207c3d0c781f75fa1104a4805de78d715636144103f27c8dd52f432. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHM22440719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301217f8a16aaaa0721d1451f1fb8ce62312b7906e43b8315da59efb8f698cf9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHM22440720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a01b2dc604402c381dc303b42d19776ae4b6a1ba7f84004c1ac69af6c440f0c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX4R52388185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11151ad65b1d84a039d15f55c088c6fa4d9d6adcde43e5ef64d4116cdd90e006. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX4R52310183.
I Never See Things (The Same Way You Do)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1910b22afac200f7f5002b3c77bb264b129e622d93bf3a8ad9c118a9c95198b5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX8LD2392949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74c5815aa5c63571cb94b268c2705e17294c68dce019fc8a93ad43c3b01cc89. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GX38U2213949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51c240cdb9b00def814b071e3909ceeedb285b0f7cc7f8d569c3f9c1a71c910. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX38U2213950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28403ddbec571352f290b461a999419ff9348df4277b5f8b1dab99702fa9be50. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX38U2213951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be256e40067f5f737de407045af28c989682dd66c21449ca147c3b52dd03ffb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GX38U2213952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e61cbf5d56c7cd47deacd73e151667f079d2ac320e94185adc0292d7f276562. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX38U2213953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f2c44a91d9b3ce95fd3679e0787717a9e800b3beaf25608078388204329693. 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/GX38U2213954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf899e5412c6ca54cbdd632587ecf28c39c8db0be6657e72ad8a22762733d7d88. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBSMU0020837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a306aaff624680323ce1a4049a71600a0341b046ecab2af5664efd1b234d2c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBSMU8225601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f5e67fd8abf4076ed55e68c9bf135c29d083498153591e3b2795a7e7216fd5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/AEA0Q1837579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88db125259b9c2bc12fbaa66e0520c5b689934328ec4c22be1f957a38d921a64. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AEA0Q1837580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc360ebd81d4ce4b9191960f32b60f2b3c5c4836d6228c8dab81ad19111b79383. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/AEA0Q1837581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe271e544c88247e9e18f57e4628dd5897926d2102a327ecb67f6e9c667337e7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AEA0Q1837582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aefde1e81fba5fad34535dfefed1d26ec076390900f4f0c2aa5d391bccc369. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AEA0Q1837583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350bb850af8c29e93f938b60f6c7e273c61ee122a51e8460b6aa60225577a983. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCGJ2555459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a01b2dc604402c381dc303b42d19776ae4b6a1ba7f84004c1ac69af6c440f0c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX4R52388185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f987461e4471ada6432b47de24a35878a2170e1e2410d115c29df7234bb4ba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX4R52378770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4349679aaacd592f03a0df83093f2f17ec19d67c4f478499a79af95cea601d21. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX4R52392544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11151ad65b1d84a039d15f55c088c6fa4d9d6adcde43e5ef64d4116cdd90e006. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX4R52310183.