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 0xf29feea2205c295ae8450da38e4fb82a81bc492399f3aa5edfd9bf626d75f945. 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/9c59e86e-c35a-4993-a713-25412d181e9b.json and https://artists.proofprofile.net/proofs/artist/9c59e86e-c35a-4993-a713-25412d181e9b.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 0x7083cd8657dfbe11ca0b75d1c411fc086e18178e7512a202b3fc1f3a385c33cf. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHNC2188714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e1cd63a72fcbcccb6e9b1dbb0b7b13c89b5d51eea821f68c38b58d867b8b3b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:52Z), 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/NOXBT2201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c2df7fabd7d89257d54227bddfced5487db91c6f199b23bfe1699156a53aac. 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/NOXBT2201110.
Glem meg, men jeg glemmer aldri (feat. FILIPPA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872efec60b18865911c902a2aa7c24591fc08955c3dd70a2cc785a9d382e09a7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOXBT2301210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb97efe4307b18004fb9ad0319295742e0465e2ed4e707e62bbcfe5f1a57afe. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:24Z), 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/NOXBT2301160.
Følsom spiller (feat. Vinz og Philip Emilio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cbb1340cef5628f68851ace1895cab0ee34715bfed976f27f9a99ede2e3bb2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOAJR2200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e706bf1c509e8b2a4df06a0025953d7e48587e03d323450702f0cf9ad62eb6. 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/NOAAC2400001.