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 0xfd8cc119486bf872a638a1daef73dd7b335b3c6df91f9f805c4479bb765e9aef. 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/2b7b61c7-c83a-4bb5-a60a-57446e8a65ed.json and https://artists.proofprofile.net/proofs/artist/2b7b61c7-c83a-4bb5-a60a-57446e8a65ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8199de8e02c8e09216e2719cd3941aa02d3a0b1732318538f04eb0bb8cbc3e67. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0zdc5yM62HaDePRymIRFJE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0zdc5yM62HaDePRymIRFJE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a8b05cc20e00e2d67c4305ed91e2670a8761b3742cc88e13cfa1fb9c3f75b7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0RsQCvtkrjMfYkFEf3vkIt.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0RsQCvtkrjMfYkFEf3vkIt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c1aff9d48c730941fedc4d4f860d5763ec1b473e474404d9aabfbd2f1216dd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2wAbp8tRzKU26WQoQCTPWl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2wAbp8tRzKU26WQoQCTPWl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6fef4e70644c917e552b9eb85eec51bf308bcd7cf527d773ed5fcd6f024aab. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1S5ebVOaW1mssHwg1qYoj4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1S5ebVOaW1mssHwg1qYoj4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df7bd497970d79d9d4ca58c7b7d9251590286a3090de98c2d1a0b46bfb06164. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Hk4AyFWfSfBCZnmSEo7lN.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2Hk4AyFWfSfBCZnmSEo7lN.
{"copyright_id":"0x912a0b58359f0dad0f0a3fa285dfa5c3847094e0e7d6df80732a8a9ca1bb49a1","isrc":"KRB921940369","name":"Clap Your Hands","registered_at":"2026-06-26T15:42:29Z","spotify_id":"0gtZBdY3TgK7qJllUyB6DN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912a0b58359f0dad0f0a3fa285dfa5c3847094e0e7d6df80732a8a9ca1bb49a1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0gtZBdY3TgK7qJllUyB6DN.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0gtZBdY3TgK7qJllUyB6DN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53517d46dc38efc67e82581c4a6e120f836b1adc54c2a585a4d60528e06c5bf9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4gWbhrQ14TXOYlpZ7icSRG.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4gWbhrQ14TXOYlpZ7icSRG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a2e427ab9d4d62bfa0888a23fb0526145c27964543df4ad19ab803fa0e3964. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1NQdhb72hXSpnrf7GFfMH4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1NQdhb72hXSpnrf7GFfMH4.
{"copyright_id":"0x13abc46ac0dfd76a788ff4491db2cf26022a24a13c97fd1f7911100aa6b2a916","isrc":"KRB921940348","name":"LOVE LOVE LOVE","registered_at":"2026-06-25T01:05:02Z","spotify_id":"1ScxfwmgRwNnffGEbdzSpk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13abc46ac0dfd76a788ff4491db2cf26022a24a13c97fd1f7911100aa6b2a916. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ScxfwmgRwNnffGEbdzSpk.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ScxfwmgRwNnffGEbdzSpk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243d98732a36b54f118ad328a0629656f95dd3707bed563ccb3bc81fc3dcc853. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6V7OGXMs41thLfhNwDM2Wj.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6V7OGXMs41thLfhNwDM2Wj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95664ce7e2188d35184aa9f875fc71e4a1e5a9a807d9158048eb2b98e9cd272a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5EoA59eFEYCp6rqouP6HfK.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5EoA59eFEYCp6rqouP6HfK.
Revenge Note2 Pt.2 - Time to Shine (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f2e786ca31225347a55480152f3c320e409f39968fd14a6b558a7b150c068d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/70Lm3v9OXn1vNmMFpcAUv8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/70Lm3v9OXn1vNmMFpcAUv8.
{"copyright_id":"0x6e47dbaa8dac84663d06f478bdec8e931fc3f30c77a03b99f57d9b18723c0c93","isrc":"JPPC01800012","name":"Sixteen - Japanese Ver.","registered_at":"2026-06-21T12:55:16Z","spotify_id":"4zZhMChW9opw4YwjNDpg8z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e47dbaa8dac84663d06f478bdec8e931fc3f30c77a03b99f57d9b18723c0c93. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4zZhMChW9opw4YwjNDpg8z.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4zZhMChW9opw4YwjNDpg8z.
Cross (Original Television Soundtrack), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff9bec6b426aa4e8309c550d085f1f959095dc357256161437dc5c53459e347. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7r3hXeIyZrvvF6upjduwXX.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7r3hXeIyZrvvF6upjduwXX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32bc51bbe60faae56d80ccbb604df2f666b92cfa5e341920e50ee396de60e3c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7rEpqhevhn3QdknfqafaDT.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7rEpqhevhn3QdknfqafaDT.
Pink Pink OST (Subtitle : Say you love me)
Pink Pink OST (Subtitle : Say you love me) (Inst.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe466e432d37a84034509cf1e7a61a83ee87186298812a840c80ead0054be7983. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/24COKej9WJzxhMvlai0Hsu.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/24COKej9WJzxhMvlai0Hsu.