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 0xe00d77cb69dcb7f6b076e60040248db4ce5080499f52bd8be95560b73f137fa2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed9fe4af-06ce-4f36-a6e6-3f7a66c6cbc7.json and https://artists.proofprofile.net/proofs/artist/ed9fe4af-06ce-4f36-a6e6-3f7a66c6cbc7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x9cf459fa1a40ab4586caa165ad5abe52460d8b2988d3ed9f8f4b8bc8ac71911f","isrc":"JPJ902104000","name":"MYPPL (feat. Daichi Yamamoto)","registered_at":"2026-06-06T16:46:02Z","spotify_id":"0MmXuP8T9QQVoTc7FHytOI","type":"track"}
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 0x9cf459fa1a40ab4586caa165ad5abe52460d8b2988d3ed9f8f4b8bc8ac71911f. 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/0MmXuP8T9QQVoTc7FHytOI.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/0MmXuP8T9QQVoTc7FHytOI.
{"copyright_id":"0x62e6425af45e1f628b9356d3d241b7aa997a7d16d7f2ead55cf6fd482ef3e97b","isrc":"JPJ902103210","name":"Filter (feat. JJJ & Campanella)","registered_at":"2026-06-06T23:35:55Z","spotify_id":"2zxCoDmHhil2orScdDJ2C3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e6425af45e1f628b9356d3d241b7aa997a7d16d7f2ead55cf6fd482ef3e97b. 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/2zxCoDmHhil2orScdDJ2C3.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/2zxCoDmHhil2orScdDJ2C3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2200180d04d01c7d061044c4b48bb7d6fce0794173b43d2af4f9e5cc844f4e6. 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/5u6Y5ugbvJFVkj79pWavJp.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/5u6Y5ugbvJFVkj79pWavJp.
The Way (feat. C.O.S.A.) (Album Version)
{"copyright_id":"0x1a95693aebd0cd61a0fab818a93492a486716a2156b8fd8ddd3fb797ae9c6d05","isrc":"JPJ902104020","name":"The Way (feat. C.O.S.A.) (Album Version)","registered_at":"2026-06-18T14:43:34Z","spotify_id":"4UdUSnqqysgFQPjk5sL3Af","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a95693aebd0cd61a0fab818a93492a486716a2156b8fd8ddd3fb797ae9c6d05. 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/4UdUSnqqysgFQPjk5sL3Af.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/4UdUSnqqysgFQPjk5sL3Af.
{"copyright_id":"0xdb151f3cf13bf3b76a9293952f0619d37c39d33b660970d2e0dffed1aa16a5e9","isrc":"JPJ902104030","name":"blinded love (feat. (sic)boy)","registered_at":"2026-06-08T11:31:02Z","spotify_id":"7KP8mHNdVGVLedTCrCExap","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb151f3cf13bf3b76a9293952f0619d37c39d33b660970d2e0dffed1aa16a5e9. 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/7KP8mHNdVGVLedTCrCExap.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/7KP8mHNdVGVLedTCrCExap.
{"copyright_id":"0xf45fe58fd2b53cceb91cabf89e7a507eaabbca44845c93a69fc24779a998623e","isrc":"JPJ902101600","name":"Stay (feat. LEX)","registered_at":"2026-06-04T16:09:19Z","spotify_id":"36KSYooFHzpOUj7zVdWcCF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45fe58fd2b53cceb91cabf89e7a507eaabbca44845c93a69fc24779a998623e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/36KSYooFHzpOUj7zVdWcCF.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/36KSYooFHzpOUj7zVdWcCF.
{"copyright_id":"0x684b919607c302b2897ab23dc13b77de86555821c36aec2bb501c2e983b0abad","isrc":"JPJ902104040","name":"Leave (feat. Lil' Leise But Gold)","registered_at":"2026-06-23T02:24:02Z","spotify_id":"3P0vDhl2QZEkVFFtvqkIn0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684b919607c302b2897ab23dc13b77de86555821c36aec2bb501c2e983b0abad. 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/3P0vDhl2QZEkVFFtvqkIn0.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/3P0vDhl2QZEkVFFtvqkIn0.
{"copyright_id":"0x9a159aa42b727ab7304fb7a965ee86466e33b1f067b2e4e78e385e24ef0960a9","isrc":"JPJ902104050","name":"What Is Love (feat. Kvi Baba)","registered_at":"2026-06-08T19:22:49Z","spotify_id":"7bBUheaJvqHw0OuloobIIF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a159aa42b727ab7304fb7a965ee86466e33b1f067b2e4e78e385e24ef0960a9. 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/7bBUheaJvqHw0OuloobIIF.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/7bBUheaJvqHw0OuloobIIF.
{"copyright_id":"0x8240d74b13fe196555f3b0f979e6c741ea9992eda45df2e112c48c6a9e649c44","isrc":"JPJ902104060","name":"Every Time (feat. MANON & HNC)","registered_at":"2026-06-26T21:03:11Z","spotify_id":"64pEK2uLTUTfnACMSMjFTg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8240d74b13fe196555f3b0f979e6c741ea9992eda45df2e112c48c6a9e649c44. 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/64pEK2uLTUTfnACMSMjFTg.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/64pEK2uLTUTfnACMSMjFTg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223520f3d3b80dea107f08e661e3f6e0668480133ba5df502f0806c4af3ec9f3. 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/7FKf1gxvZNQWFAeJtXNpKG.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/7FKf1gxvZNQWFAeJtXNpKG.
{"copyright_id":"0xeaba8c13ba62bb7d200eb4900c9b4cc4462c8e309c21cbb2063faf6a2abf2918","isrc":"JPJ902005510","name":"i (feat. Taeyoung Boy)","registered_at":"2026-06-25T07:55:00Z","spotify_id":"2weIBtMB9AWQSrBCt4RDw9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaba8c13ba62bb7d200eb4900c9b4cc4462c8e309c21cbb2063faf6a2abf2918. 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/2weIBtMB9AWQSrBCt4RDw9.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/2weIBtMB9AWQSrBCt4RDw9.
S.D.S =Zero= (Subscription Double Suicide)
Manhattan Records Presents 2021 Best of Japanese Hip Hop Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafae36d8d6f2d7c18bc0f9b74acea1895759ebb584587e775a3ac3cc653cf7de. 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/6d28iVuvuv1JNCNMbEKE0e.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/6d28iVuvuv1JNCNMbEKE0e.