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 0x64ce6cdbc89f39c17b72c7acc66feeb284531a30bc68704bb1380f661609d7cc. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19dbd5d3-00cc-4fb0-9d5e-2bee61679aa3.json and https://artists.proofprofile.net/proofs/artist/19dbd5d3-00cc-4fb0-9d5e-2bee61679aa3.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 0x3f19e91b10d63a43fe58e26509ea18f375e74842e27ff12034bcb993f9c613aa. 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/QZW9L2265601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58784d7ae3d1614ea4bec9fcffa59fc1df24d550d88c3e102f6c261d3d390d2f. 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/QZW9L2265603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b89b467738e42dc0ed10a6c04976d08b3b7bd208cab156eaab1d0fd5b1e63ec. 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/BEB682100523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fed6ff24680e4124be4dbad421b763b22bed8e82a41c131724c84462a9be54. 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/QZNJX2103112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cd4c8979cc41774bdf98a3d41b90d06e7df97f313d5c65137a36bcaf5b4786. 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/BEB682000433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16289ad82e961b728ee80e0789f861971e447c8ff1960a8ec1df4afd0ca8f6a. 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/ITO281900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ba9f480190877679b6c5228ac5b7acbbe89e69c9f0fef12b23efc062354b61. 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/NLS761600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584e2cfdd1f0dd2f12c975a5dcabe3e52cde567699d11cc82461dcb46716ebd2. 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/GBKQU1549521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d80ba065f7d3f811f59f86dd921e9cc2cf04181b3f0d8f955dc1f55bcedab2f. 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/GBKQU1545507.
Nothing But... Hardstyle Anthems, Vol. 15