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 0x518ab80967b113f7cd19f8b028bc4e0eadd8b1f6257dae13fb28c51a2fd4008f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9eca325e-0e76-47a2-897f-e5669586ec00.json and https://artists.proofprofile.net/proofs/artist/9eca325e-0e76-47a2-897f-e5669586ec00.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 0xdee1f6527ac4f54c5a697ef260087f36d814ce514f787ea42ac06b8574674baf. 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/DGA072391488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee41aff18b018cd44fd4446d0d62a22a82beca08c374fc701a3d848cc5e06c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA062381790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf154b6bdfaddf20845ca71f40ddbe6ad4f32e583ff4cb53d41ac42a615926869. 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/GBKPL2160941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ed5bb5e78440c75af70589c187a5c9e9a4364d5bd7cf0de074175187881164. 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/GBKPL2206612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2456e91aeeffa2835e15f6e2d3903b9e35acac4648de46fe270128c32cae6f97. 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/GBKPL2173472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d401a8f961893cbe5c81c73ee5ee18be390ade1853a2fe00c9f745e22f4fa4. 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/FRX762336423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129720aea5abc1eb64cf82ac8a83cf793062cde28f528144c362f704dc6720e1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA072391489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee41aff18b018cd44fd4446d0d62a22a82beca08c374fc701a3d848cc5e06c6. 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/DGA062381790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d401a8f961893cbe5c81c73ee5ee18be390ade1853a2fe00c9f745e22f4fa4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762336423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ed5bb5e78440c75af70589c187a5c9e9a4364d5bd7cf0de074175187881164. 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/GBKPL2206612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2949b2235ad51388809656d792d5d5debdfaca13c277a43ec039b0351fc58853. 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/QZFZ22217593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2456e91aeeffa2835e15f6e2d3903b9e35acac4648de46fe270128c32cae6f97. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL2173472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf154b6bdfaddf20845ca71f40ddbe6ad4f32e583ff4cb53d41ac42a615926869. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL2160941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeeefa1dc5f7292fa36e671e07e24d3f4ab8a515cd8b2d3c38ba32f9f8cd5fb5. 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/GBKPL2155223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e2f1a72965d7bfc04d2d658128f47c276966b8990cb9d392976e7fa54240da. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL2029457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd943ede09e491f035e87c0f6611cc34a5c546a878c6818444b9205f25b51b217. 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/GBKPL2029449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc5e27a9260705363082b60b611aa8155feaefe608634479e50df11b5da4139. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL2018510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a942f5b1e1291c55183da3f099c9e93af7b34b320b393ad64f9ac8a129376b. 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/GBKPL1978083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd943ede09e491f035e87c0f6611cc34a5c546a878c6818444b9205f25b51b217. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKPL2029449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc5e27a9260705363082b60b611aa8155feaefe608634479e50df11b5da4139. 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/GBKPL2018510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a942f5b1e1291c55183da3f099c9e93af7b34b320b393ad64f9ac8a129376b. 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/GBKPL1978083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c3e1225ee03417e5dcabd15b83d0fa5a82a75cf99210bf2bf3e2f01db19065. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKPL1823882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7110792dc48a841dce7722cf65c59b50f3bf735ac2e78555c343fafd329818c7. 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/GBKPL1801247.