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 0x2aab8e6cd895cc3292b03722928315595b7dd836bd83e5cf08ac3411fee3aee8. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96652401-7239-4e75-b593-d2880603bb25.json and https://artists.proofprofile.net/proofs/artist/96652401-7239-4e75-b593-d2880603bb25.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 0xbf4a48f004c3f1d3cee4e82c521e5b4af7b13176d9e79fec844d55f4cbb5f45c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG731859210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04733e75e8567d5e969e8b22aedefa039930952575cb8f4738983f230ff804ad. 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/HKG731859211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0286c85a7528ff6ad2ac638baf11d34b27b4e5a193426028e22b5f4d1815b3. 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/HKG731859213.
九游青云志（九游·《青云志》官方手游主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa795d8aaf778fbabe62017fb7b6bb1005828bda98bef5047773f0d9617a795. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG731859216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4678c80622d2ca74d8a82228fcaeb567d27fae83118857d23e0e4a59d1ea1111. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG731859218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01feb33b576f86321e09751f33d6f8ab4c121bdd563749729b166713c8feabd. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/HKG731859221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5551b8ccd414112ae0535cc6ccc96a5b22d8e5c16bff0af6051cdc6a351fe99. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HKG731859223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7d29d5aaa25c8dca73da19583904d8a0a84b0194635b0a400183b80ae010bd. 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/HKG731859226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb883ae1f2d1e3e90ed4887ef35b8962d1fa53ccfca1864029c6acf06b459343. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/HKG731859227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a8d46b7eb6b1958541a89d41f15e4d9ba1b06231198765fd30b8c86613f0df. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/HKG731859230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a289039517376c70897b6c0232db78b058314247d053bbae58fe822b80cbf5b. 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/HKG732254988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e9398e9334d3a937b40dd2c33274d7cd53458cc0225be87998e60692805f04. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/HKG732255012.
长谣千年 记《梦幻西游》动画完结5周年
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56022783dbbb2eafd6ecb6eda160b6ffbfbdc618c92048567e1f73555ded5693. 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/HKG732255026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288f1bd756fd5910c46c716cb99fb04ee780d9fb1f62817fb5afb3b4c0a26899. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/HKG732255046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165d3be8fedc3143b30e43d48a7586dec6747358e08be3c6aec39f3cd402c5cd. 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/HKG732255054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de3cdbb951b15a10c5e0b2353ff45bbb4e6a31d7ea5c5de86c63bec0bcb4543. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKG732254851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c14b69d985d58c3a92954642bf58d3332792f088179a3bf0880553c57c3e3ec. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HKG732271493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24b078dff1404eaa4b84dd6df8fb0514279d00691909fb440627e0dadef2b1f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKG732271495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1178444526070f7c6c28b3587fe222259a7d3612b4d0e5e6f126daad3a3c5d0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732271497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfa9d61c37b15f1d8cf9d594898dacad34ee308011c87abdda812c7f46c6bc7. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/HKG732271499.
我开动物园那些年（《我开动物园那些年》广播剧同名主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eece9c16f7b5f8ffab51d13490c2d56ffde996193c8624f9e7a0f9bf4cb20e5. 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/HKG732294213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51cedbc7cefc258ee6bb08395eefd4554256172c4b511e30456305c7967bcb8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HKG732318677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a094347cf3639e5d7c68f97e614a712616be273e998efaaf0ba41cc1be65e1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HKG732112134.