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 0xb042f5880a1f6cda0214097b161edd6082cb085902f1c8e505d758bb9435f2ee. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23ab809d-74ac-4377-83e7-a1dddb8474c0.json and https://artists.proofprofile.net/proofs/artist/23ab809d-74ac-4377-83e7-a1dddb8474c0.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 0xc1825903a8293f68ef3cb0c55852b12571b077bc13cbe6dd643e9979d74aea20. 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/USSR39317401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98a9e52e7d493c769b39f768e9b978ee55f113d367d142ebaf6b379e2303c72. 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/USSR39317403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd552692d9797854f545b43d5abecf8112bf6945ad61545c2d26ce077533110d. 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/USSR39313501.
4 D.D. (For Devotion) (Smoothie Harden Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8275a69c996dd7779d6423fd953568a858dab94a8d3120e205d581b0b9cd589. 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/USSR39313502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96497345b5fbcd8c32439e60d433ade7bfffd5e623fac2294cec8c3141c8a9b. 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/USSR39313503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ec7314573d5c8dfc45f2e9fc918a5c82b769dd04061093dbe7ccafb5a8a93e. 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/USSR39318801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2aa0b569a574e72038181855ea22594cccdc5aa01acbcd11cde6e33eb7f0e6. 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/USSR39318802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6547a69b10abece7105b1df76eb0ca34ff5e5d3280034c5db5ff76877c26d393. 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/USSR39318803.
The Lost Tapes: 'Little' Louie Vega at the Underground Network NYC (Unmixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34323b7713bde7356d6660c2d38e9d54c10fd413e18b9a518abdca490ed2dac4. 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/GBDVG9301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae04485fcd59181d46e8ed729f345357fd7e5d73cd7482a8211a7b27e37093e. 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/GBDVG9313001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c492e50df034d4b46dcec4b4389ed5775961917a4fc0ebdd888a8c54a27e0a2. 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/USZUR0600124.
Freedom (Make It Funky) - Color 4 Frankie's Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d79f1946a438bc94adb3d0dddfa4fbebb41cd3e2d35a6e6559d733c6cf4b2ad. 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/USSR39540304.