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 0x6878b8e6204a5125df6d36899b5b30b7dce3442ff4cddd6e9f86c9d400c58009. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d20bf89b-b938-4a0b-ba04-331701417e2b.json and https://artists.proofprofile.net/proofs/artist/d20bf89b-b938-4a0b-ba04-331701417e2b.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 0xc8864118f2e7c41526c814733658acf99a18b678972f6ceb82f2ed603106d724. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:11:49Z), 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/SE48S1700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caea1501ed6c5c1d66513a4f3cb65ba0e8ce84c9c35a43a6162d0dcedc07f35. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE48S1700501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa406d67519d62fcdd74ed2c1c2fba3b5a5a35b98a67109c42bb5b7ab31f3db40. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:39Z), 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/SE48S1600602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7557a61fb7aab2d8f3b078f669bcf449f017594efcf1baa5ec2e16080f7dfe5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE48S1701001.
Far Beyond (Live in Concert with Dalasinfoniettan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad39790519c76f4c1c047987e00ddafa83b8841b80e20d12a799b6799f7c7ef. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEVJH1906402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b3a113d6bcedf0d2dacc29729eb3850a354865f431513d6fd7ac593441b837. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/SEVJH1906406.