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 0x3993cdf7c84d757cd85aeabe84ae4877e3d064b6fddd99dc28b5919c65c733b5. Chain 2 (Bitcoin): anchored in block 953846 (2026-06-15T22:48:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00fea627-2e27-4c8c-b80e-366ee15d3258.json and https://artists.proofprofile.net/proofs/artist/00fea627-2e27-4c8c-b80e-366ee15d3258.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 0xb8fc1ace9990f3bc51117e0728e1910486e05e84f4bb03c2dd5f48d8bd01d63c. 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/QZZ972479262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d46f6291517679e43e869beba3659b80bd35247e7a90cf1ea1c17db131fa3c. 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/DGA072316686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c6c82d5f07236e258eddf95bfb915a69971307db8fd66ec1ea4a7bf4c1dee0. 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/DGA072316687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9ca4bda06a65070d6516fd968ebf3e5dd619d91508bc00286dae37388fae5a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DGA072316693.
长谣千年 记《梦幻西游》动画完结5周年
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a291b67d8a1a85d5f3545600298d20b542dfde06cfa0993bde7b7aab6334912. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/HKG732205658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347f692b3819afd512e88cd40f9b9b41df4e9026c2c9c9a05f6f36c230c6a631. 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/HKG731759607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55b43a9979b6e566123587c15ccb44cba4bc5a61ba2a1c0655567e4693b261b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/HKG732258652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed134c6e4a2ca93d1f695cefc048d0d03ba6fa02868a9396363a1e89ac7bb8d. 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/FR96X1936760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80687a2f108df9748e67978557537678f0585ed0afdce1a9bd17df2d69e803a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR59R1935706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe274237bb80a5b8381524c2886aae6a644dcd01c92ef19408ca6f8f078bc0d6a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR59R1935707.
隔世烟火（《重生之将门毒后》广播剧第一季 主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39982de0c77e22ab0104326a0cdea69216f707132704c835a2a440ac86be6e5a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/HKG732428114.
隔世烟火（《重生之将门毒后》广播剧第一季 主题曲） - 主役版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f2537d15b78b4204677aa1068422abdb02f65684937030c6764f8978789eef. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/HKG732428115.