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 0x79c0c6d60512e793fc58cb8e75b3c2ffebd1866b0a9b9b2266a7ee1bb1da31a0. 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/4b3d77e0-993b-416a-a199-60589237643b.json and https://artists.proofprofile.net/proofs/artist/4b3d77e0-993b-416a-a199-60589237643b.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 0xe0173d2b8e353696e038df80f1968ecccf2e23c73f47a3c8487c42c563b01024. 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/GBCCM0412904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a25e65123418088a23c381471f671cf32efd835e78fa4c91283d3d93b57860f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBCCM0412906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cbe3228e9c40499972d9e5adffcfe09aa47835017f41f4ea9f300e7bd43158. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBCCM0412908.
Don't Touch That Stereo (Shaka Loves You Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f8bec6ff38c54f370442d29ab039e93a4a8bb09336088583b437621b79e8ee. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:01Z), 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/UK4LL2013005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa4f69d93c57ebca727d296656649a834b004435966b7b52e10e88da2e0adbd. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/UK4LL2013010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc24b1f468b63618b76c8f15c917e75cf9e3beeaee30e42f358ad1b5a7ac8118. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UK4LL2100004.
Medicine - Kraak & Smaak's First Aid for the Dancefloor Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0173d2b8e353696e038df80f1968ecccf2e23c73f47a3c8487c42c563b01024. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBCCM0412904.