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 0x8498ad30a2cf326c2087ab0dda5cac0ac0a8ed53819a1bd0f809afff12a14aef. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d9d1c65-ca47-4fa1-9ac3-856c0fb9205c.json and https://artists.proofprofile.net/proofs/artist/5d9d1c65-ca47-4fa1-9ac3-856c0fb9205c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Het Regent Het Regent De Pannetjes Worden Nat (Remix)
Deze Vuist Op Deze Vuist (Loftylighthouse Remix)
Bad Piggies Theme Song (Loftylighthouse Remix)
Bad Piggies Theme Song - Loftylighthouse Remix
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 0xa67631fdd2ecf12037e2dc2e9d534d5d9d22af13625610751aca1f0fc84760b8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6N2256466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f202347a4ebe8d29970182c7c92934fef461818c36792fab0a7d2d1d464271f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB62346497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc99076719aef8dff55c7b9d18cfc61692edac4ebcaae3a8bae6aa4ddff260f. 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/QZWFE2424775.