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 0x463e376fcfa1d83a37a08156d91da6cc2939d1cb655ea4854c10d186ba36b355. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1c5d210-f6b3-43b6-b009-ebd912ba613e.json and https://artists.proofprofile.net/proofs/artist/d1c5d210-f6b3-43b6-b009-ebd912ba613e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
レッツ！ゴンじろー（アニメオープニングver.）
レッツ！ゴンじろー（オリジナルカラオケ）
わさわさわさ！（オリジナルカラオケ）
{"copyright_id":"0xa16ebe61684fe74ceb18f51107a0bcd91935d5d8a983c9062339908dfad5519d","isrc":"JPP302000316","name":"UNITED GIRLS ROCK‘N’ROLL CLUB","registered_at":"2026-06-19T02:49:24Z","spotify_id":"05jjFFdOt3iheMtBKa4J7U","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 0xa16ebe61684fe74ceb18f51107a0bcd91935d5d8a983c9062339908dfad5519d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/05jjFFdOt3iheMtBKa4J7U.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/05jjFFdOt3iheMtBKa4J7U.
{"copyright_id":"0xa16ebe61684fe74ceb18f51107a0bcd91935d5d8a983c9062339908dfad5519d","isrc":"JPP302000316","name":"UNITED GIRLS ROCK'N'ROLL CLUB","registered_at":"2026-06-19T02:49:24Z","spotify_id":"7oVDQPi77CXAlWpHxrsnPb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16ebe61684fe74ceb18f51107a0bcd91935d5d8a983c9062339908dfad5519d. 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/7oVDQPi77CXAlWpHxrsnPb.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/7oVDQPi77CXAlWpHxrsnPb.
Maybe Chocolate Chips (feat. Ric Wilson)
{"copyright_id":"0xeba2debcce316751c1cad11cee6c2a48efcd3ba2f43aa0c3dff0f930f323a575","isrc":"JPP302000767","name":"IN PINK (feat. Mndsgn)","registered_at":"2026-06-28T18:19:02Z","spotify_id":"3ZiCPj3ggKFIiNmvYfr0PD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba2debcce316751c1cad11cee6c2a48efcd3ba2f43aa0c3dff0f930f323a575. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3ZiCPj3ggKFIiNmvYfr0PD.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/3ZiCPj3ggKFIiNmvYfr0PD.
PING PONG! (feat. YMCK) - From THE FIRST TAKE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01364fba18f7c27998789763d21fa331b9aeefc08a22eeaed86d97e74836b713. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2rl231r8FAFFgB96d202HZ.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/2rl231r8FAFFgB96d202HZ.
{"copyright_id":"0x01364fba18f7c27998789763d21fa331b9aeefc08a22eeaed86d97e74836b713","isrc":"JPP302101727","name":"END (Confidence Man Remix)","registered_at":"2026-06-10T13:20:36Z","spotify_id":"4Ms3f4cdYwD54lLQUaJlRh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01364fba18f7c27998789763d21fa331b9aeefc08a22eeaed86d97e74836b713. 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/4Ms3f4cdYwD54lLQUaJlRh.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/4Ms3f4cdYwD54lLQUaJlRh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd982220641ef829fe5419d03981e4059aa117cf88da69225793030e1b4fea222. 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/7uroxhy7wDzSbtGEgHqLzs.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/7uroxhy7wDzSbtGEgHqLzs.
{"copyright_id":"0x642ace7267717bc523c18faac2df6fda016b61129d0c20d0d3a4548c945ef240","isrc":"AUZEI2200016","name":"Angry Girl - CHAI Version","registered_at":"2026-06-24T10:31:03Z","spotify_id":"6UBlYch3Y7UjrjSME9WXF5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642ace7267717bc523c18faac2df6fda016b61129d0c20d0d3a4548c945ef240. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6UBlYch3Y7UjrjSME9WXF5.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/6UBlYch3Y7UjrjSME9WXF5.
{"copyright_id":"0x642ace7267717bc523c18faac2df6fda016b61129d0c20d0d3a4548c945ef240","isrc":"AUZEI2200016","name":"Angry Girl - CHAI Version","registered_at":"2026-06-24T10:31:03Z","spotify_id":"68mufcoOTcqcKgxbzti1Nf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642ace7267717bc523c18faac2df6fda016b61129d0c20d0d3a4548c945ef240. 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/68mufcoOTcqcKgxbzti1Nf.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/68mufcoOTcqcKgxbzti1Nf.
{"copyright_id":"0x846d487bccab0b8666adf4868f3cb2f31c37ae3e627b5727e5681f4cf08c8e03","isrc":"QMRSZ2101014","name":"MORE JOY! (feat. CHAI)","registered_at":"2026-06-06T12:14:10Z","spotify_id":"3Ivg4xqJ5PQ0HYXTSpGtO0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846d487bccab0b8666adf4868f3cb2f31c37ae3e627b5727e5681f4cf08c8e03. 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/3Ivg4xqJ5PQ0HYXTSpGtO0.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/3Ivg4xqJ5PQ0HYXTSpGtO0.
{"copyright_id":"0x846d487bccab0b8666adf4868f3cb2f31c37ae3e627b5727e5681f4cf08c8e03","isrc":"QMRSZ2101014","name":"MORE JOY! (feat. CHAI)","registered_at":"2026-06-06T12:14:10Z","spotify_id":"3AM5mBRomYW2ViQrRP4MXz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846d487bccab0b8666adf4868f3cb2f31c37ae3e627b5727e5681f4cf08c8e03. 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/3AM5mBRomYW2ViQrRP4MXz.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/3AM5mBRomYW2ViQrRP4MXz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846d487bccab0b8666adf4868f3cb2f31c37ae3e627b5727e5681f4cf08c8e03. 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/4191Ua3ZiOLOiZwDcGh0yq.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/4191Ua3ZiOLOiZwDcGh0yq.
{"copyright_id":"0xb3175cb7a6340faee25b3b74a791e0e5ab22a4ea4564d65b8a70c0e7bfe5c6e2","isrc":"NOQV42102090","name":"Summer In Reverse","registered_at":"2026-06-28T02:01:26Z","spotify_id":"0AzrxBycZIVgW4nbmG1CiG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3175cb7a6340faee25b3b74a791e0e5ab22a4ea4564d65b8a70c0e7bfe5c6e2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0AzrxBycZIVgW4nbmG1CiG.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/0AzrxBycZIVgW4nbmG1CiG.
{"copyright_id":"0x25c3bb0bb3fbcd5140d3c2a53ac724c250f23daf6ea1925241ce1fc4232c8f50","isrc":"JPPO02200872","name":"CHOTTO CHOTTO","registered_at":"2026-06-17T22:48:46Z","spotify_id":"55kIki7uA3uBAPhZM0CZfZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c3bb0bb3fbcd5140d3c2a53ac724c250f23daf6ea1925241ce1fc4232c8f50. 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/55kIki7uA3uBAPhZM0CZfZ.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/55kIki7uA3uBAPhZM0CZfZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735cd1f8244391b17f6c4dac3bca17f546726d22baa065da49579df78918922b. 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/2bmq7wwgtGVPPJ0vYpjcXq.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/2bmq7wwgtGVPPJ0vYpjcXq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe018d2109e6f059982b7825a3b944fd89770f399c91b8a337d34ea043e668d6f. 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/6NrBfYq03RzmwIaBPIEmOt.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/6NrBfYq03RzmwIaBPIEmOt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735cd1f8244391b17f6c4dac3bca17f546726d22baa065da49579df78918922b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/47RPdLJ46hbULRA1tmfZqH.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/47RPdLJ46hbULRA1tmfZqH.
Teenager - DJ Sabrina The Teenage DJ Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735cd1f8244391b17f6c4dac3bca17f546726d22baa065da49579df78918922b. 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/2oXYNuC2MyRIBEAuhVCIAz.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/2oXYNuC2MyRIBEAuhVCIAz.