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 0x9ed15720b60eb02c14c69f3f2154e283e74b7719623ad7065a1b0b1de35ed8b7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08eb9972-4415-46e5-90aa-20595218fe62.json and https://artists.proofprofile.net/proofs/artist/08eb9972-4415-46e5-90aa-20595218fe62.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hella Kwengins (feat. Stickzodt, S Wavey, Ard Adz, J Boy & Sho Shallow)
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 0x2b5b899015f59f9b67c7d2e9c7266a5bec63cd31cac4a3eb03ce5d4bc3c32b78. 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/GBLFP2097574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4e65fab263a6e2151a543af8e337eb20420a79af5cf708a406e318e1f0a86c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UKXN22077953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976ab01bff8a943a3a641d3b4dc3b5aa5b5dee2b5501348fcaa266a530dfb75a. 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/UKXN22098487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124879ce34ce0d66042f8f05f4a264b28af8f4634c629557d12ad3ebf27cdb07. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBARL1700289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257b6f8d25e854616866a83a2e7d88c981a56e19d4bd121309d34c213788d64e. 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/QZ8LD1912478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976ab01bff8a943a3a641d3b4dc3b5aa5b5dee2b5501348fcaa266a530dfb75a. 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/UKXN22098487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760651c3dfb0f37eecda0ebd5a1e4dab4aeae9a7fa3cdc67e5096ad2dc3ebf54. 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/GBLFP1579940.