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 0x1cad35a63bdbc84fb219708efd71d96eb23094a9accf9c224200187126cf1f8c. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21f0dd87-e27a-429c-99e2-11774677477d.json and https://artists.proofprofile.net/proofs/artist/21f0dd87-e27a-429c-99e2-11774677477d.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 0xfd499d66686dce55439d070fa333e7c09a8436c31585184d5b0fca9d0777ac13. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZS1Z1601480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2d2dbb147fd7f4a84268b7875dfa13176bf5be79ecabd6b4e96ba8f97cf86b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:40:43Z), 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/USLZJ1730713.
No Future (feat. Clay) (feat. Clay) [Shaun Frank Cover]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf136378cca975e662b3de94e05f31765812e763acc1748da2b11c5e6038c6c. 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/QMWZB1710553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf136378cca975e662b3de94e05f31765812e763acc1748da2b11c5e6038c6c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMWZB1710553.
Back To Time (with Broad Run, Arnie Woods & Ethan Heckard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869340d072d22535b13f0cff4e6a94c1115d598de1f6973297b5b23cd2d374c9. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:21:29Z), 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/GB2LD2110409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65eaee59c4db47ba28ac815a59f1286b87a0779ec400b2f037205b2154044364. 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/GBKPL1898539.