1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371ef671c591c0a7b173919c69933f411d13d8f2a7cba6dc5efff6ec0e49d30d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc18cd5c-08a6-43e0-b6b6-f280b8b6ebe1.json and https://artists.proofprofile.net/proofs/artist/cc18cd5c-08a6-43e0-b6b6-f280b8b6ebe1.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0070d81a61e095e105dadc93254adb5b1e72cc483dda2941f537a2bc01adf9fd. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52399909 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1ef463b0d5874d08e9a2cc81b876663c03f9bfa98c472c81dc08ca1ebde00a. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52399910 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb915e16db46c02621418be1f7fc3719dc0ec1fb83467aae88ee10a17c1c16331. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52399911 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb9756de43d2a46bd4743f0cd20e22e9e48cd482c617a8bc80ddf08ca44c422. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52399912 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75b3e3888331c6f621330bac3427cf8dfc80a326bb9d1f13a6f91fd18d85b24. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52399913 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758c44787dd4ec122ea8db332eca4e679b9058806da2f17c05d3d965ed605f3b. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52399914 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954d5d2dc82420697f22c41c4d857d81b0eef5fd264dae4efd82d91d6058e1b2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52399915 — a six-check JSON result.
入芳塵 (決戰！平安京帝釋天典藏皮膚《入芳塵》主題曲)
入芳塵 - 決戰！平安京帝釋天典藏皮膚《入芳塵》主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cddc1be6f85767db5a3d7fd91eebb954ddd8d43dcc32b728644c326fba726e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52399694 — a six-check JSON result.
神遊 (決戰！平安京鬼切臻華皮膚「天墟·萬仞」主題曲)
神遊 - 決戰！平安京鬼切臻華皮膚「天墟·萬仞」主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46833842e64bead1986b24edadb72976d836bb8fc22c29cb633b8b4d72ff2d6. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52399777 — a six-check JSON result.
星寰 (手遊《決戰!平安京》不知火典藏皮膚「莫斯星寰」主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf17f834b310b427076d04299e14edfc8358474a790e755f7f17b64a953f7b4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52299586 — a six-check JSON result.
一折春 (手遊《決戰!平安京》帝釋天「聆夢三千」皮膚主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2330aaf15e3817d66a210e9be4b7e33f94cb2a0a89f9605c6faf7282d68660. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52299680 — a six-check JSON result.
《幻想者》-決戰!平安京 (搖滾樂隊WHITE SPACE)幻想者系列皮膚專輯
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a1182442fa0759c147b9c2bc4d561592a9d2fea9117e746790c58e2273df60. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52299678 — a six-check JSON result.
御曜 (手遊《決戰！平安京》大天狗典藏皮膚「丹曦霽日」主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a890fb87e4998ff4cf5a3bad8a34a82441c575a7865e5e115d94d80c8bf8c17. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52299747 — a six-check JSON result.
綺宴樂章 (手遊《決戰!平安京》綺境漫遊系列印象曲)
溯游途歸 (手遊《決戰!平安京》元意識解碼系列印象曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43bf9f8cf3256f2ff9aad0538a385d06af51f29a0598ed65b05502bd87d64cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52299992 — a six-check JSON result.
Reborn-決戰！(平安京×百威昕藍聯名形象主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19613c985082adb4200a5c4740733fe3e1a89513c06fe1b7a2b03e8f25dd8518. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52178856 — a six-check JSON result.
明月幾時 (手遊《決戰平安京》花鳥卷: 明月幾時 皮膚主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997db254929c0127431be2eca42b03280320c74cc4464910e6ec987e311e9dc3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52199899 — a six-check JSON result.
海月 (手遊《決戰平安京》 面靈氣: 海月幻想 外觀主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbea9d69370677d3fc6a37bbd105d93398120c0d7cd41097c7fb448ea6080c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52199911 — a six-check JSON result.
Good Day (手遊《決戰平安京: 返校季皮膚 山兔&蟹姬》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9953446db1b69ee7053efd18a51de2f10a7f1b11d9b7777e1e4c58fce32c77c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52199920 — a six-check JSON result.
柳下琉璃夢 (手遊《決戰平安京: 原創式神十六谷》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6690a3910add0510c41f74fbd5c1480b1db5b616276ee1c63ce11c1e3af93311. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52199926 — a six-check JSON result.
黑金之輯 (手遊《決戰平安京》搖滾樂隊PECCATUM系列外觀專輯)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfc5ad5442625ce2da71c3de3b436366dc9fc8e0e3e85270209f0a2567e89fa. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52178897 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a604a7c8ec8ff817314f19ab2f2854e714bab6148367dce6a13fc6df3049ba5. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52178898 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9c23a7ac0ec7bef927c221da93f11167931c20ba0ab0a36c536d4338eab898. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52178899 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafd182588507f6658d15d3bf60c595580bbed598727b0155cd6ccd046e1fa6c. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWCG52178900 — a six-check JSON result.