1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8e694052c675b4512826412ada846e1f17613e8941fb1bf75f98e426004cacbe. 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/2a3369d1-afa6-43fc-adfb-6b66e6b05e64.json and https://artists.proofprofile.net/proofs/artist/2a3369d1-afa6-43fc-adfb-6b66e6b05e64.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 → block OTSBitcoinBlock must exist at that height 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 0x9214d51a21f666715701775c579dcb58ca864cab3e218aa476606aabef1ea576. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USHM91463113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6500c77e811b7098188921ebd074d25c11d5953e963fea9cfd0e2c6c7b0f83cb. 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/USHM91463115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b236dde2c932c722d7a82f709894d03b8e820fc1a315469c8c7f31c10434da. 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/USL4Q1821683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5701d601f8d262a73c875aeceb716d1ca8a56e2ffde3b44fe49bb4acfcb4a3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFMG2376203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb626f5af7c6f463dbdb78719114c61e52e4a31988f61ff05a1a3c516310a89. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMFMG2376208.
Canciones Breves para Tiempos Complejos (Versión Acústica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea08814cb47a50cf79fe0c8040473769a55ca2dee3a5321297ed92697bd4ef19. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6N22417028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45acc59d78345ea524bd6c64d42bd324d8b990e75f7d6af341cb44875e679df8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6N22454025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434d57e1143f6fb223b3bb3430f8ff7b8c89b2f9e457cbd953c79fb27f18c0da. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:01Z), 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/QMFME2412512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b00f7dc0cbc61e54d03cc2e260778223d966ad1a994cb5de6821c8eed27e462. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM6P42539489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b00f7dc0cbc61e54d03cc2e260778223d966ad1a994cb5de6821c8eed27e462. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6P42539489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239a4308e9d137514f001fca278de790ee40f3ba04884f9eb7962c5dcd2cf4c6. 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/QM6P42540321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484ad3d9e4a6c967e2601af17d34ee3e65fb541c2256ebe4b7d51997018d3614. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6P42540324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef7b7eb2b3fa70a86e640c8a1b10fa361e8c3b77bd73bcd6de0591cb4673a14. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6P42540325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6605196e666cb21a8c51136c56c19a2a832d6104f1c3c5d919fa963f2deadc8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMFME2505832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4641f9713a536d4eedeaa48a9ad4cc3f10c5d551e6d4dc872fcc835e8ed68e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:53Z), 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/QMFME2507991.