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 0x45d9dbc5df93422333f0c0ff545a6834b08e5d995787e41492fd166a33a4db2e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c634276d-44df-4f36-bd43-287e41268cd8.json and https://artists.proofprofile.net/proofs/artist/c634276d-44df-4f36-bd43-287e41268cd8.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 0x548eefa9bc4b6a4d83902029144e550a1858730e679c079d419adf4e9cc81509. 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/JPL542400714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b7ccfc7c5d3a76e4ea7d774d4fc0fce175d64f1f80607e70a32cbfb5df8308. 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/JPL542400459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f6f90c3a22710733190789564dfd31d122ce72f5084166873a2a2c41d7abd3. 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/JPL542400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080007a4321ced51acf9a5878b2d2d22fb9f2cb48d1b2f5b0f4f447d4724a3f7. 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/JPL542400715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f84997e5c987f480efaac044616ccf61b00aaf9330925e2dc2b7385b272bac. 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/JPL542400716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcfa63a914a052c692c5fdcb3d7c397319517f27c36e0ef2c3f26f7a71f7e65. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPL542400458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7216996ac3b66e15a2f51cf427ab36c9d2f2c53fa2bb068d2d0da15f0522649. 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/JPL542401027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcfa63a914a052c692c5fdcb3d7c397319517f27c36e0ef2c3f26f7a71f7e65. 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/JPL542400458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b7ccfc7c5d3a76e4ea7d774d4fc0fce175d64f1f80607e70a32cbfb5df8308. 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/JPL542400459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0500fa6bf665cc033467817495c3061e77cf7970f1fd803bef41eea9700b87. 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/JPL542400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b85e5f59596d89feda2ffe5e827c613f15fc8fe2b884bbf9d04ba0bf4b7b4e. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/JPL542400380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360584f00de427c36e8ffcb5d15e519123ae3da4f9a64305840310746a9c0744. 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/JPL542400381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7724f0af73804c9aea9bf3fc3edcc0798740bef2820841251a0a41630a7b8762. 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/JPL542400286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38200955ae46d2cb98381e88ad790c45984d3d566daeedfb93665c749b342da9. 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/JPL542400287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fba724684add5ef59c48d51bfd884c33361e06dce74525deb845cb3cd26ca7. 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/JPL542400288.
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