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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825b9d3a87fccdee9333840bc98132c2d3b57a37366a9b80768ea2f1c191d924. 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/cef81e1c-3559-4c94-b554-d7534afc25f6.json and https://artists.proofprofile.net/proofs/artist/cef81e1c-3559-4c94-b554-d7534afc25f6.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a88101d919bc97e909d6d686c4ab174500f0ea8249b76be977f9c4a256dbf5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:37Z), 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/DET190500260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bf2ff94310ade9991c3870402949605f4059a98355cef12fc926c41f13831a. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DET190600461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26462270daff2b9784ba8526782c9cfbae3712ffde1ae658712bdaa17979867. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DET190600466.
Barbie Girl - Manians Freak in da Morning RMX Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0b116dc4cda4d5cd273fb85caee27ef52bdc21d1a74a9fab39bf527275d6b7. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DET190600502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565601804c7d31f8b2a0faa079dc26d101d9971f8c4306790b57d8416a07d7d6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEHK90804401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa266cc271d53823246b8b692e3e8f290abeb1db565be0191fb602758a509f022. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEHK90804418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca23e9c5b093fd4d5fa8c6df1a6185919d4e8c1ea08e1dc4d3071885ca79d323. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEHK90804412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b0fffc1b46dabb18085e01b88eae0e5ae0c626bf3fc9d65a4b3c757f9a9f1f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEHK91017950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57022971aa6a0f0698b2786fe08e4f5d884e56c462835f0b09c232630ae0b14d. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEHK91249802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500689e2e3446f382a5c3c3cf268bf9bf871273ba8339ab0d7fb30b243c518ca. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:41:53Z), 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/DEHK91256501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46c93335dcb8d2ae1fe452a22f9e7e2d1c0247a95fccfd6e1b81f811310fca6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEHK91584101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffc289990782f3d1e65f74b83a90af081946594dcdf0b31d2ce3823835e9278. 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/DEHK91788921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800d65e7ef3e16a4d2270eb1d461b9c6f9c2b90fdcdbd060e9f3a947687e03bc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:49:23Z), 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/DEHK91788923.
Feel My Love (Sub Zero Project & Devin Wild Remix)
Freeloader - Rob Mayth FX-Bootleg Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c09448b86cb5519bc13077fb2f2f5b8ffd182175bc2b0a7d4d38f57ef1679. 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/DEHK90806187.
Barbie Girl - Manians Freakindamorning Edit
90's Club Hits Reloaded (Best of Disco, House & Electro Remix Classics)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc185a8734e70a2534c16d4de198a328013ba0b878f3b42067dfb85b2341577. 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/DEBL60732310.
Evacuate The Dancefloor - Rob Mayth Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fc30aeb7725594f78b5be911141d79ec5476a1f07e12a9a82b7f1971f48195. 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/DEHK90911309.