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 0x680c414851b9ecc25a5bc3f73e77dba43557fd0d38980b85d590e536ed14d7f9. 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/36e9fb34-2087-4e25-8da4-19d5637d4d6a.json and https://artists.proofprofile.net/proofs/artist/36e9fb34-2087-4e25-8da4-19d5637d4d6a.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 0x6888900ef99d046a781199a7cefd424adf2eb8e9df4416349ed75d14a348f89b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DKMM11601701.
Snap That (feat. THE NGHTL1FE) [Kelde Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec21c3b5b68ef73b90dc289ddb7aa4eca613f510830fe475dd7995bd672bd0a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DKGOR1808060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1e6e172303201e4bca68fdb287641b538845d76d460196933ca67cd6ded374. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DKUM72000247.
Bedre Uden Dig (Rikke Darling X HEDEGAARD X Clara Sofie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac2e3e6561ecc5b24c5dd5ee1b8015423c4eaa05707398e3a9f29b314a183a1. 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/DKMM12200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4043c5e60e5d9463ea4ac335c67aa33654791af642af03593a638ba98dc18ccd. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DK4YA2294301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c245a004d4b2262fde6fac5f4862646ed58c14ab109e2cca56842e1b6e1a71f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:56Z), 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/NLZ542300692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88c8acd64dd12e9c5df3532ee44901957ed5b7cc5fd861871d9e761bb3f0f93. 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/NLZ542301034.