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 0x1d808196a3407d61c83faba7a730e6feb26395b8b04ea1e794eaa460b481911f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58895f73-2a90-4fc6-813a-35d82eb43240.json and https://artists.proofprofile.net/proofs/artist/58895f73-2a90-4fc6-813a-35d82eb43240.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
纯白 - 网剧《侬好，我的东北女友》主题曲
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 0x3f58a160742b2fd285578822fd720b7effc5b360a558f21ba778a4986bc54f10. 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/FR96X2281441.
爱情诀窍 - 网剧《侬好，我的东北女友》片头曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f35d25e91b7bffdc3b4380ec2f9ed0e959cd31c49c020731a67d5186addaec8. 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/FR96X2281442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730e37dd7e0525ceb0dcc1e59b611ef7bf6cd75e9d013e4a826b29de664e25fd. 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/FR96X2281444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39789676ce89db5158d90adea48043fe30dd36f1038d9ff99fc66e799c626e9c. 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/HKG732128307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237589e7e142f47d6057f7a74d3c74d0bf8347536feab1eea0438482872472d3. 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/FR10S2193355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bec8b848a86ce4126b886dfafba9632200b8e06804cdbebb1b9a3aca5938811. 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/FR10S2193357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a0e381dabb00a04b33c4eb56734fe43d7c9c2a94b74fad5097f275ad0cc39d. 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/TWCT52208167.
成名在望(網劇《星河璀璨的我們》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f9e854355624900fe7fa053dc67e1ff34ef8c29d52e0160880c1291e44fa69. 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/TWCT52208168.
成名在望(網劇《星河璀璨的我們》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38371ad32efc5234013f78f00507f100063e94b106550d01d6034a4633f65e3b. 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/TWCT52208169.
一起年少（網劇《星河璀璨的我們》片頭曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a34ff896e388d9de788ad8f05f0674a3835809fb94d97e430f118671f57fc49. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/TWCT52208170.
防備（網劇《星河璀璨的我們》片尾曲） - 伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ebf920a314b8fc3fb8c8b933fdff4cba56f2a34808dda40bf3b6e2cf3baf47. 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/TWCT52208171.
成名在望(網劇《星河璀璨的我們》主題曲) - 伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4025da9aed16f579c2c2d1313c4ddfdac1db25bb5d9778e05a611706be041756. 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/TWCT52208172.
成名在望(網劇《星河璀璨的我們》插曲) - 伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a6bb1767917651afde0fb73070a85a5e9581dbeb4ac4140a98a4c38daae8a2. Chain 2 (Bitcoin): anchored in block 957242 (2026-07-09T01:00:33Z), 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/TWCT52208173.
一起年少（網劇《星河璀璨的我們》片頭曲） - 伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd184fcd1aaa408ffec4e8a61375b3271921dc9845e6a7aaf4e8b04688da48a7d. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/TWCT52208174.