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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7568bb6ca8d63c110a907d7170a5a82a31d188bc72891bf78e9f100afeb8fec6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30aa3678-fef9-4ec1-ae40-f13a40990ef0.json and https://artists.proofprofile.net/proofs/artist/30aa3678-fef9-4ec1-ae40-f13a40990ef0.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea19bccb05821063363da2758a5a3512ea2c88be1055de553e667c8ef12056cc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0M2317517.
五百分的梦（《山海高中》广播剧第一季主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4181db1bee252dda6a8dc8b6001521df8555abba96d658f83e4b8579218dd0d4. 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/HKG732428124.
心动引力（广播剧《乖，就让你标记我》主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f4f8214b66b5d75fed4303a4f3a4817bcfc15e4e728e700022474a0d95885a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QNSM12400781.
无穷意 (广播剧《送君入罗帷·第二季》主题曲)
无穷意 - 广播剧《送君入罗帷·第二季》主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdf92c31541adfd9b52404164242e0d063428a5c35d3a37d96c1dc9c8ebb8e0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DGA0R2488745.
顷刻即永恒 (广播剧《一枝·第二季》主题曲)
顷刻即永恒 - 广播剧《一枝·第二季》主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ac84c66eafbcbcdc9b24e6641eabfc0cbc852a46efd22d5be0dcd65725e018. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA092464548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95821bfb0f234ecd718e81fc3fac243ff47719f89600e45b7da85b2dc44ecf8. 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/CNZ632400597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbff79d5c5522c46bbcbc5e95c814b70d7a769ce5456e4e22fd134b461381bbe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKE022233558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a1cc2fc5aa8ecba5692aa409ea460669f2fa16ca3d6c539354770cd5584870. 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/QZZ972479745.
归鹤 (广播剧《回到民国当导演》主题曲)
岁岁 (广播剧《在古代上学的日子》主题曲)
岁岁 - 广播剧《在古代上学的日子》主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a01ec94497b52a661c96b815297be5c321924b5411b097c9708ec5652177b9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX872367656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e295da3bdfa6fa3429ecff7e9b4e8e328d7a7b267ab3df237aa53ff38889c4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX872328770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30afd9079229daf0adf515806c5852e22274e98d50dd0879abe4cbcd8e817fc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX762374395.
另类童话故事（广播剧《加菲猫复仇记》主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9292c10892b9b69888cb0eecf027af2661981b6edd6842d17bf58abb658824b2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732252476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ffac555297b1c35c5bfcca40293f9adc9b9cff7942a2bb6173846925665099. 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/QZZ972328953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c48336195ed7ecabda98be1486195e0e62cb32a9856f317026767fb6315e7f4. 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/HKG732152772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3066bbf5d2bc6e4f031bc5776c86a9aaaaf318e4c57e807b06d1d1189886e3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TWDL72010475.
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 0x1f9c7451a32f94b5fa6450f745a3231ae790fb22b145e0aa63ced5b6ae759270. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/HKG731616930.
门后烟火（《过门》第一季广播剧主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6abb9b37ff4cd38afbe44fa2814a4758cbdbef122f9be173abf64ddf2ec4150. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/HKG732427944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3781a76d2bde90130f97ebf02d944e70d98fdce2296d9f7f347d6493b170a800. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72016714.