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 0xc537a130e4ce81a83095dbc5db1c7bd60b9b4bb532126a7ee6797f1bd831d6d8. 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/c073d4c1-dd1d-4ca8-b0d8-b989e1142077.json and https://artists.proofprofile.net/proofs/artist/c073d4c1-dd1d-4ca8-b0d8-b989e1142077.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tuyển Tập Nhạc Trẻ Hay Nhất (Rumba) [Vol.1]
{"copyright_id":"0xc945b2c771381be33ea1e7404d4fa38acc5e44d2a0f1d9d5c305d1d2352d4cbc","isrc":"CH6542091157","name":"Bước Qua Đời Nhau","registered_at":"2026-06-09T20:43:45Z","spotify_id":"5gpVv7fbr54nu0BjdevYoQ","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 0xc945b2c771381be33ea1e7404d4fa38acc5e44d2a0f1d9d5c305d1d2352d4cbc. 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/5gpVv7fbr54nu0BjdevYoQ.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/5gpVv7fbr54nu0BjdevYoQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aa6d4af15051d43adaf5dbc9a35dfcacc80b1329b111337e31ee757f501056. 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/6ovL5JCNdV47iJj3n5JMG7.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/6ovL5JCNdV47iJj3n5JMG7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b7aad7035096aa8c73bb914fdbd7931e13da38ce8e0c155d6ab28ed1226da8. 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/4kIH3xJ39lyYa3fofZoFc5.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/4kIH3xJ39lyYa3fofZoFc5.
{"copyright_id":"0x98efe33fade66fcd5358003d67580a5e6f5479e30ee88df27c6aaac5f0fb5be0","isrc":"CH6542091162","name":"Thích Thì Đến","registered_at":"2026-06-10T07:25:21Z","spotify_id":"7hKD9AYENRzDmWgbNOaxw1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98efe33fade66fcd5358003d67580a5e6f5479e30ee88df27c6aaac5f0fb5be0. 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/7hKD9AYENRzDmWgbNOaxw1.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/7hKD9AYENRzDmWgbNOaxw1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af1a97f6356fabf72e13f44a25d2221058c77c0360d5a6c17b9be1721e3e402. 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/62TtEXyFtivavhINg57yyY.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/62TtEXyFtivavhINg57yyY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1d2586516a50990ac625bd6da970d6225faca3430595a431df71559fd1b5f3. 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/538s8RMU0X879xfCccUkXP.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/538s8RMU0X879xfCccUkXP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf243dd68ab065d9d5845403120507f4365d6daf88a17ba6017899030d262b731. 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/7F1RagspYFgSO9wRRAtRww.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/7F1RagspYFgSO9wRRAtRww.
{"copyright_id":"0xe48177c60a2a125700ff3d89fb9a9e94c9ab9277cb1ea680fb5034f7ec5a3bbd","isrc":"VNA2F2402142","name":"Vẫn Nhớ (Ballad Ver.)","registered_at":"2026-06-20T12:17:51Z","spotify_id":"38EfyeMxk4YoGex2XjNVA3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48177c60a2a125700ff3d89fb9a9e94c9ab9277cb1ea680fb5034f7ec5a3bbd. 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/38EfyeMxk4YoGex2XjNVA3.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/38EfyeMxk4YoGex2XjNVA3.
{"copyright_id":"0xfbdc2586b0ca26bb51149533d377e9b65a724487c07ff3dd23a96e5b83ebfbb9","isrc":"QZYHM2421029","name":"Yêu Vì Ai Yêu Vì Em Remix (Deep House)","registered_at":"2026-06-23T16:04:14Z","spotify_id":"6iQKXswN9OC1bJ4qyhQUjm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdc2586b0ca26bb51149533d377e9b65a724487c07ff3dd23a96e5b83ebfbb9. 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/6iQKXswN9OC1bJ4qyhQUjm.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/6iQKXswN9OC1bJ4qyhQUjm.
Có Duyên Không Nợ (Lofi Ver.) - Nguyễn Thạc Bảo Ngọc
{"copyright_id":"0xadac0493f4e8dd8c7265bf82310dbabc29fb9a62c324dc52cecf6ca1f62eb0c6","isrc":"QZYHM2417329","name":"Vẫn Nhớ Remix (Deep House)","registered_at":"2026-06-22T09:00:18Z","spotify_id":"4oxGWXhHSiIqiluQL6GU3X","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadac0493f4e8dd8c7265bf82310dbabc29fb9a62c324dc52cecf6ca1f62eb0c6. 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/4oxGWXhHSiIqiluQL6GU3X.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/4oxGWXhHSiIqiluQL6GU3X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bee34c6711c0b967d003ae41f02412336f607ee8b4f3c868fc9a08849e0e039. 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/4w5AyuMm88NpEhWUhHMAf4.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/4w5AyuMm88NpEhWUhHMAf4.
{"copyright_id":"0x1dba8ccc1fb0f1b6f735d8ef77455c3e05c0ba2bf3236b4ec9d62adb5c6912b8","isrc":"QZYHM2417312","name":"Vì Người Không Xứng Đáng (Lofi Ver.)","registered_at":"2026-06-27T16:05:11Z","spotify_id":"62QYz7yFqEgtEEyMMrrwEh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dba8ccc1fb0f1b6f735d8ef77455c3e05c0ba2bf3236b4ec9d62adb5c6912b8. 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/62QYz7yFqEgtEEyMMrrwEh.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/62QYz7yFqEgtEEyMMrrwEh.
Cho Em Gần Anh Thêm Chút Nữa Remix (Deep House)
Cho Em Gần Anh Thêm Chút Nữa (Lofi Ver.)
{"copyright_id":"0xb0f7019e77f7eac9a08cdbfaa815288e65621fa444f979b6d2860390a4d7977b","isrc":"QZYHM2417328","name":"Cho Em Gần Anh Thêm Chút Nữa (Lofi Ver.)","registered_at":"2026-06-27T16:05:05Z","spotify_id":"49nZkZyB6FMLtpMoHEr5Kz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f7019e77f7eac9a08cdbfaa815288e65621fa444f979b6d2860390a4d7977b. 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/49nZkZyB6FMLtpMoHEr5Kz.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/49nZkZyB6FMLtpMoHEr5Kz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728908ce171b4a4c711269d42f49816890d13f7311cb2eace847720c9d20f59c. 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/0aXqS65RIrzlYCiWaLvNAO.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/0aXqS65RIrzlYCiWaLvNAO.
Vì Người Không Xứng Đáng Remix (Deep House)
Cho Em Gần Anh Thêm Chút Nữa Remix (House)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fec1b9a96a91a3c0f5909b5f023252e5de8d1f67a14ed2bd4894892befe8974. 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/47k0I0RBlBF5HZ2vTC2lUP.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/47k0I0RBlBF5HZ2vTC2lUP.
{"copyright_id":"0xbbf750994b43f07950620412a0373ce2c753563d6c8edba6db88d4558f621f42","isrc":"QZYHM2414651","name":"Vì Người Không Xứng Đáng Remix","registered_at":"2026-06-25T13:54:59Z","spotify_id":"4gRKh2lA9zyEU6q5O66NTk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf750994b43f07950620412a0373ce2c753563d6c8edba6db88d4558f621f42. 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/4gRKh2lA9zyEU6q5O66NTk.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/4gRKh2lA9zyEU6q5O66NTk.
{"copyright_id":"0x00af74f0eac301c1579f390bdf88727eca8e6f1aabe7f586063989df8a6e268d","isrc":"QZYHM2414638","name":"Cho Em Gần Anh Thêm Chút Nữa Remix","registered_at":"2026-06-10T21:17:01Z","spotify_id":"5h8koaxlCFUQlqmwsOwTXv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00af74f0eac301c1579f390bdf88727eca8e6f1aabe7f586063989df8a6e268d. 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/5h8koaxlCFUQlqmwsOwTXv.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/5h8koaxlCFUQlqmwsOwTXv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21879f365671800a0484cd6b9284983599c11591c89d0e3faf343cbb1a8564de. 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/4ryQQ2jZfrmpw8AyPD0eF4.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/4ryQQ2jZfrmpw8AyPD0eF4.
{"copyright_id":"0x61a1d97d382e2071c501981e85ea90aaeb15105d68cd7c9381a0cd8f670a396b","isrc":"QZYHM2369515","name":"Có Duyên Không Nợ (Remix)","registered_at":"2026-06-23T14:21:51Z","spotify_id":"2VcncBR9lU8hz2YhrkJdjQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a1d97d382e2071c501981e85ea90aaeb15105d68cd7c9381a0cd8f670a396b. 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/2VcncBR9lU8hz2YhrkJdjQ.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/2VcncBR9lU8hz2YhrkJdjQ.
{"copyright_id":"0x5f0f1ff24e89b34c3f816e75b6b76d69ac33d0a984dc553b5102e734b6f8cce7","isrc":"VNA1M2291507","name":"Vì Người Không Xứng Đáng - EDM Remix","registered_at":"2026-06-09T20:41:27Z","spotify_id":"40JGvjBwikBQREbxg7MUh2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0f1ff24e89b34c3f816e75b6b76d69ac33d0a984dc553b5102e734b6f8cce7. 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/40JGvjBwikBQREbxg7MUh2.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/40JGvjBwikBQREbxg7MUh2.
Cho Em Gần Anh Thêm Chút Nữa - EDM Remix