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 0xd61000d3e927d7002048f032d9c741d6220513d8ccffdf04493b013f224e7714. 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/47795ee4-89ca-4aa0-b4bc-9bcb99c2c575.json and https://artists.proofprofile.net/proofs/artist/47795ee4-89ca-4aa0-b4bc-9bcb99c2c575.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 0xf7ac967fdd73fa40f1bf0aba0e1edcb83851f63953967314bd82b9d373f2fbf7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZXT2454590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0427f1618256f9760625fedc3dc1c718fe744d3737f2940f4a8796f5a9846e91. 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/QZWFG2351395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02b7e6173b7a9d399bd89f7cade7e12c61a5c471940fc222634d387b3da8a09. 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/GBQLP2300541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd39d5cb9308c89b084a5cfcba59b36564048b3e4c1c16c5f286cabb1734dfd1. 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/GBQLP2300542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788cbbf2264d1cd843af0821b7965fdda4fd61e73defa1787ec9b05c5768faf1. 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/GBQLP2300543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb3f27068eff9496a7b794dfe215aa3df9c668c5b5cd585a6809dadd17ba162. 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/GBQLP2300544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf350bd286566881021254d47351869ebc9c455ea36cf1440b9f5a8a10079a379. 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/USZXT2350883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f53b1e72f56853dc93a06cdb194e31f61152c4924307653be696806f946a34d. 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/USZXT2350884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8227a31ff145d1b6d57adb73118b1e9b954cf94e2c26450838051118a439ee20. 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/GBJX32245009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c55fb4c9d58aff48f170502de7b0fab740bd4bb0fc293594159cd955368f92. 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/DGA072112241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb924f81f71f356ec5be7ddec536200a47cdf2ee82bd34cc6d8ece259a32a903. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLCK41069332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a6634ed4eeb84785427bbc3f5a10fcbfa07564aa25c287b1945820354939fc. 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/NLCK41069333.
Fear What You Don't Understand - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ee6d7e897a376f386f644c040e9678eee27aa7c20eb8ce903526ba44b14b00. 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/NLCK41060681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba74d92be5991d6b084450b242527b2e03545ce90465a8bc22243c5862c6c59. 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/NLCK41060683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea10c00c4eda24d01059f77c130356d5ad50c75ca9c90998fe768110cb852aea. 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/NLCK41049606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026b21f75b0eff4c2a5571853cfa31119ea56577e2a278b8f5ab91f87aed5738. 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/NLCK41049607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d4390887117609e7865d9bb75eda0f7e06c203eec6583328ce4727bfc45f11. 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/UKFV51600014.