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 0x81e6e405c037b80c7f4c8a758266df7ca14b259e8a3dcf698c084d9259dfa50a. 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/d7b545c5-3c8d-47b4-be0c-958d3135fbb2.json and https://artists.proofprofile.net/proofs/artist/d7b545c5-3c8d-47b4-be0c-958d3135fbb2.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 0xcdf41de3647de17037efc8676c739a4569ed0aa41d21c8cc3f6c270010bd0952. 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/4IouQaO9GkaHC7AtMErdSa.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/4IouQaO9GkaHC7AtMErdSa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457a0b2d46883e488f2340f89c76932263f51007ef8f2431e82e89ee245c82ac. 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/2qdkg8NGkGhukt8UQcVYci.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/2qdkg8NGkGhukt8UQcVYci.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5ca4d07f9e7acddb9d40cf38b47a54552531c3f60eb5ac3aaedd05179732dc. 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/7k5UPBkjwMnaHOxPjbYswQ.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/7k5UPBkjwMnaHOxPjbYswQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5c5b8812e23588c1cc1db694c309ab36108f3f088cbebe8e3030d7c0336c26. 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/1jsuNY2norISRscbYj5ISS.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/1jsuNY2norISRscbYj5ISS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b559bc4ce266723915b5b5129e18f4b12750925b1ea1c91094dba7d8e04fe9. 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/6hUO0kmNwu0ge6Bm8AXXc7.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/6hUO0kmNwu0ge6Bm8AXXc7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cb2c52eb00851d9ebabf15f52298284f29984efcc3739bfde2f599bfc9c6f4. 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/5gOEWGhkbnYj3zuStB1N28.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/5gOEWGhkbnYj3zuStB1N28.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79ec6dfad552c176704693e5375dd913e5dc45631606152283620a8e1a20e75. 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/6xN2yWQxi4fL7cVeo9281L.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/6xN2yWQxi4fL7cVeo9281L.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dadfa12513c4daf4ffb585674d5c0536418a2ccc3f63a4a5d6adca6caf6c07. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7eIthkKvLLeGc9FfxRdOjt.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/7eIthkKvLLeGc9FfxRdOjt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57af3e01cc0726b4ecbd81d8ab7a88724b282dc5049982a88291f133f973d6d. 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/0lvirp6LgHwkRo7XvrNkxt.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/0lvirp6LgHwkRo7XvrNkxt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf86a00c698bc87a1a4efc391b38476048a63ba7ac2f84915b69fb581906f20. 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/6V03d77GJp5QTC0rHTyTom.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/6V03d77GJp5QTC0rHTyTom.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737d5cc254a220f0abfc52c23ddd0eb21e1f3776ddbba5e33468e6efa221b9d1. 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/6iKzGrRewL0aAjwzxdQFVp.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/6iKzGrRewL0aAjwzxdQFVp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dee0386565edcdbca24f511a5f786e9938dfa0eeabf2549838530f6b8462c38. 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/58P3VN60GEMmzG3AlnxINg.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/58P3VN60GEMmzG3AlnxINg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a480508063490dcd7982e648f7071aa2f74ed8e7a2502536b157eb57108e70. 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/5n13HUQaAC0fo1Jb8mhQqq.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/5n13HUQaAC0fo1Jb8mhQqq.
ワンルーム・シーサイド・ステップ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8540da64da86ff4d58ee1fd997469160fe2351b309d6875be02568060984dd. 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/4e1VrjQPfuONA6FpyVEiW6.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/4e1VrjQPfuONA6FpyVEiW6.
{"copyright_id":"0x0fca0ceafd8ac95ac6833c06b32d26958c89e76a878b268926f18ae5f6228f57","isrc":"JPB601903107","name":"IRONY - KYO Non-stop Mix Version","registered_at":"2026-06-24T10:03:59Z","spotify_id":"0ywoELzHfq74742XaswRV9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fca0ceafd8ac95ac6833c06b32d26958c89e76a878b268926f18ae5f6228f57. 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/0ywoELzHfq74742XaswRV9.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/0ywoELzHfq74742XaswRV9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbceec41c476e3acedd57aef2bf8b2b76c1225551b386566c8f7d8a8af992ef. 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/62OgybPnrIdbbkeiZmMk6C.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/62OgybPnrIdbbkeiZmMk6C.
{"copyright_id":"0x6f228d70f8a708909f946fd6571e41004b117934aab687ef3a8a7d5eb3aa1dd9","isrc":"JPPO02204067","name":"意識 ~Consciously~ - Shinichi Osawa Remix","registered_at":"2026-06-07T13:02:25Z","spotify_id":"2jIxVfi7Xr27dYmYxh7SGH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f228d70f8a708909f946fd6571e41004b117934aab687ef3a8a7d5eb3aa1dd9. 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/2jIxVfi7Xr27dYmYxh7SGH.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/2jIxVfi7Xr27dYmYxh7SGH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e11f5c91182c4c2005b74ef29b07deaf1739fe580f9d4fa6b7d0aed141d07ac. 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/6w7qk7LX6VO6YLdze6mz58.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/6w7qk7LX6VO6YLdze6mz58.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841b5a6ab1435672deb7d5ba142a336f16a1c7a7d5ba75be30f67a27a60cf5de. 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/0Jo3XaHyxZ4pHtF6sNZGMP.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/0Jo3XaHyxZ4pHtF6sNZGMP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457a0b2d46883e488f2340f89c76932263f51007ef8f2431e82e89ee245c82ac. 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/23nQaCPwwIT4AV9jn6kUbg.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/23nQaCPwwIT4AV9jn6kUbg.