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 0x1e27af09acb96bc6751c2e9713127c6376f14f2913ab9c065cd83cb330f2a462. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/341e71e9-1fb1-43bf-92c3-8c70336b5bfa.json and https://artists.proofprofile.net/proofs/artist/341e71e9-1fb1-43bf-92c3-8c70336b5bfa.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 0x7abf3f17eef3f2c51d9ef5e0bc87f5bd38583b179a143f6815ed5905bf0ea5d2. 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/HKG732495009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514de61d5e3f558ce5565e5075fff699358cf31fdf27837efcff32b2f631e58c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HKG732499158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be84fb4f48f2fd7f16185ce707ce2d36fabfe1ae797979b2e93d478e6ac8240. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QM7282581618.
跳进明天的旅程 - 综艺《跳进地理书的旅行2》主题曲
跳进明天的旅程 (綜藝《跳進地理書的旅行2》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bcd8ca2dd7ff400a0fac01e0467f8c0ba09ffe306a6ee54dc0e6d8e1fc146c. 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/CNZ632400601.
跳进明天的旅程 - 综艺《跳进地理书的旅行2》主题曲伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc571e187f18c670d60836d2bf7a86e86fb93a48a5361b28f92cae5bff4bd941. 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/CNZ632400592.
要做就做南波万 - 综艺《名侦探学院》第七季 主题曲
要做就做南波万 (综艺《名侦探学院》第七季 主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5592faded2b826addc1198b0d05344ba904ff678d5d3124be6ecc3bc7c80435. 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/FR10S2426617.
要做就做南波万 - 综艺《名侦探学院》第七季 主题曲 伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed2e3e970510594a76d5055750943e418a9c0fe3758507cd4f9b68991592845. 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/FR10S2426618.