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 0x3b7840eb8cf6c63c40808d37b329177cbeac1ab7d1a05907596a207f8f296fd6. 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/38cecc5f-8d3e-4ec2-b20f-538dda1d92b6.json and https://artists.proofprofile.net/proofs/artist/38cecc5f-8d3e-4ec2-b20f-538dda1d92b6.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 0xe820381d3971f124accb17479edf46e519536e98f6fd4a7d5af53e0ce4c3a1f5. 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/GBX722300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa790558c2d5425f0f707bb14a9a6eaa0538c5734afeaf4f8c12849f9ed58422d. 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/GBX722300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8f5032140a912202d6beedd7821683d72b0e0f4f996ecbf10fac52ecf7e40d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USZXT2250397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459208e16597f2a994553a0b24b4edb50e8abd5e6425348ec5ac764d6b0ccc99. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USZXT2250398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01fc0cd86ba4ca1473aa6b0aed13f4c16c2dd1e7d28067e9e2900630364c14b. 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/GBX722200523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1479b1add135853c577ea0db0665dd16becba93b255290acb374862462ec90d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX452277407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5573e967da89cc494b4156964577079a2e9a288864b0896937fb32fc59a6530. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLFP2299068.
Tight Road Baby x Fumez The Engineer - Plugged In
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dcdf3e2f7965d6f6ede981e8104cabf042e47263f7de8a8c4d01d481f06ab5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6I32272666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8a699d4b77217d2daf2750d5fd33438e97ae28468bc356a372b00906e2e71e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX53U2098734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf150e44d8bc956f119374d0d3267c810877052a1d9e83c385caad2f3790795dc. 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/TCAGA2235309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60144b4cf8c3e819521b8517873556b33a6b83f5aa0bd14009c0ff25f16518f. 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/GBX722500038.