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 0xb023ef1342d0ef028eb573f85869b7ec41aeea14efa2a0373ab13b4b51e0ec9b. 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/c0d91780-0382-4037-b330-4998d83bef2b.json and https://artists.proofprofile.net/proofs/artist/c0d91780-0382-4037-b330-4998d83bef2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x54a81217a0e8dd125c3e27ee9d1e480091a39bf80b139256f8d9c2ac7274a966. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG731907707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4c45482ba79120fe1234dc231af51a064edadd8916c925cf8e04a27edb86c3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ972310724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b96f23012efa7727f910447c0d1538bd5aae4e08a509d4bf3fb1c8fb8f765dc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ972310739.
草木不朽（《千秋》广播剧第二季主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d28c0bfd3596cb59119b967824c2bd7bfb1ac53aea75e50f8fe31ec3a04c249. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732428066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1f78d17ffb5c20d87395cb716b9d85de19d3be260be5d8cebbbacb65d7eaf5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR26V2007684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1d49f9a7d92e0f6c1236c089d4dd1f69b80670e10f89bf0342004d24f0d77a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR26V2007685.
武林也要与时俱进 (《一梦江湖》同人广播剧同名主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda959eb61f60abbd68e7fe5a6dd937147b3c1d1520939b9caa103f5b7d388a7f. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG731544438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13753e9980a733f98f9db50ca2ff7ff0c8a8b51093ec4d0df0fbc735ded104b0. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732158471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bc80059b6c3925317e8dc4779ec7a946426bbfb0c32ff67074ca6fc3c2b5c1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2355378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b679f0a050504694dabedbe8e214efbdeb3b6d5122349c1927276eeee0deb1b. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2355379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e404e0e5150d2d8016c854d33a4656227800677005f667a4845a94faf3065a. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5BU2394073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6dd680adff5dc255ab786308071648e4f824a0494262d0f36b9ce215273568. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA092360051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e948473a09d1512816fb9c118875d3998cc22331c3c0f6c1be8431483c5575. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32320632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fde6c5ae0347757fab4766d69132b213e93278af0484c5ad55d01413003a1f8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG731677027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee62e024430ed9f68dc9cd1f3f50d0bfc978b7a22fbcc8a0313139f1d5aa532. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2476364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b76d9aca840ed590f1f503eb86ba5a2af7da1e6d058fac683f0841055381153. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2476365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31cb6406dc3a1264e071b2f40abd8f8caf5f26dbcc83a692789f932aa8ed8b3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732421281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6703f811ac076f719135ea0ede177e6817d4334defba0ea96c6992aee769b9d9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CNZ632401053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3b4eab9f607f0956fccd4fa138ee608a302215251d3218d1b88ec217b5111c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA072414587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9db13864238fd6665a95eb9fdea229ed0e0143f68c4a13b3d17fbf1b2e5f4ed. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA082410358.
天生最相配（《哪吒之魔童闹海》电影同人曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a8e557ca36925a5cc5a8eef4929fa93b359c1975824e1075754bfa26b0cde4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKD012517907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ad83e9e6026d2d32366d44bc15f76b35915edf02a293d031efb7ddf431dd72. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732541218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd760e371238e4b79b60279767d257eaf3c23a5f77aae5d093ee5d1acc81dd7be. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKD012517951.
百战成诗2023 - 游戏《王者荣耀》113英雄群像献礼歌
百战成诗2023 (游戏《王者荣耀》113英雄群像献礼歌)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11f52604b461fce667907c0580cc217b263c181596870f5d58597d7032244b4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2382129.
百战成诗2023 - ——王者荣耀·113英雄群像献礼歌伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f8c1400293e80ffa89265d15999e53d774a724e1e8a3b5dba8b87abf2e69bc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2382130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5df84f26091544003f4e0c6fdb1f4629bab83847a6d5e6d644a7e03b870bf6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2178214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082d707c519a324a1f98bdc36d4523fb457ead90b4fd24ab14256c23709aefbf. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2178215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46191f62719ea74ae057c2c6508b627a47dc8eb17ce46cb1ef5aa5ac69d29b68. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0P2313829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ea469f8f2e3cc21732d2ffb3289a0948bdd5de2484d8e07d3328239673e485. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ972303785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c3cd3500ec768642d7068076b31f56c38c458089837e670fc8f3876ce2a9cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452230663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a937f40bec60c5df70a441dbb71497bb47b2ce4c38c1e7cb4201e59d65e3c3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452230664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e4131329c4cda7dae0fc1017e429f1ed18d98a1c4f2a759ce55aa63c6a3906. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452230665.