1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x156b7dde1c22e7fa7413f9df798377a3c4e78508d76c74653baec6c6bcd7d9e4. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bebabd4c-1c7d-447b-bc6e-3a88c3dc1766.json and https://artists.proofprofile.net/proofs/artist/bebabd4c-1c7d-447b-bc6e-3a88c3dc1766.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 → block OTSBitcoinBlock must exist at that height 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 0x2055825a4f10c3ebfafa80f205cd0fcf8e8940438a348bf02c68d78abd87b98c. 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/TR0341000342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9806124cc832e6a3d420094a7c8e448538d0bfc3c09a6bcaba864c8fd759401f. 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/TR0341000351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ccc091f0a7a0f280120d57a24b9ac88e2dd9a79f65845a7000e4bcdc3d74c8. 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/TR0341000352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da5a73d2b27794becc63a000f22187015952797c7e131dbd75a52506337a4cc. 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/TR0341000343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a664e17d904856a50110ef9c24c76fb528832add0b0b2417bbb6cdea418b34c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TR0341000349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb772ef4619eb0a2fdd86b77e256735785718662c37c5414b0713ad7374f991f3. 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/TR0341000344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506e28983021db858aa8d2efa8e47791a721104ccaed3975dcc8cebeb5b58d93. 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/TR0341000345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d24ac361694155a1056a1e6e0a8339b2f337adbef204074e43fb21e1ba8157. 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/TR0341000348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f610c45fc4059eba7e9682c18a274dabcc669c4173b92b6b3858a28cf4ae22. 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/TR0532013446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbc1e65658aede7adbd778016261ab2fac72eefdf54a5b4af19cd04807c2a6a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TR0532013470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683e6260997cb2f05034af9c80f2d7a572d58f92e8ff91b4d568ecf23f021bbf. 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/TR0532013449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5219f517613320b877b8abcebfe85f5b82e66d70ba0984ab471e3b94f3dd5b2. 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/TR0532013471.