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 0xff677f610e72be36da3d221094e720f2831afabe8db49982d616e2868631aa09. 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/c9f30e8e-1786-4485-b92a-70f9dcb4eeb8.json and https://artists.proofprofile.net/proofs/artist/c9f30e8e-1786-4485-b92a-70f9dcb4eeb8.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 0x68dbef45dc6c28803dc0a631980557abdd59419de0b7b1a7d236a93d1fc455d0. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/NLHR22370020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f56fbdce009bce47dfef9bbd96463f9ebc56eaf8e82481a0f1ac886c7e0c8f. 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/RUAGT2404045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8b3b5606276eed9ad9b18468d517360dc04bcd45b3be7aea8e43d8b0d54d68. 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/GB8KE1653677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c212b52c712e7cff2d7982c4702410eef4140f75b9febd7eac794770a65254. 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/DEPI82422587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f5d08c8ec39dd8ff2a0aba0a6251b8a851cb18faf4bc1569b692a8e73473f3. 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/QZTAU2103970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c60d417e3fbc8e2fdd7f46c9c45bf4dd2fe50dbd340baf3466ce35a70f1c81b. 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/GBKQU1906294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe78e44bdb0b934bbb62280f8846806f0ffc569defc49a80fa5f8dc29148840. 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/GBKQU1636913.
Capitalism Music Rapture Revolution 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953a817f0dc52e9c9b3f264344488356f9fa5c265ef12cd780de9d0d489f3d7d. 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/US83Z2416211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2ca2285b4bfb16abcfab0b373c01fd4b34c6f8fcc6899df050918bad028c21. 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/GBKQU2480274.
A Daydream Nightmare (Anton Ishutin Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be5b8823d3e3a777f6b7060d7763fc983153e863a0c266a5ab81bdcf096c5f4. 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/GB8KE2414350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dffd2f1d4d27305c5c6729dab602361354e9ab1c405465db077613177b2f94. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GB8KE2413803.
Тишина твоей глубины (Anton Ishutin rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7860df988fa63e6dc60af06e8df656d24b3e590f44c3286d2a606f9f18cb1c4. 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/US83Z2472571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3bc4b40d88c949c16090de8641c2991d85f5e50b8c60a7d00542abfe688bdf. 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/GB8KE2407698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3e517f40f0de92e7089a261ad2a0ffcfa340b930e6f69d204c553e46ae580d. 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/GB8KE2405992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c51492d635d779ce2db9834ce0f7d206f683e87d206d1bef814c49da4b1b12. 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/GBEH42010037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bd7dcd3311ee9def4323696eea91d1102651fd013cf2fb0c721647d4e9d2e3. 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/GBKQU2326582.