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 0x1d739113b6db376829a3eace58ea79ba92412c3fc31b9cded312f08a95bd2577. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dbe2c33f-4d06-461c-84f3-2e9b28ae64a1.json and https://artists.proofprofile.net/proofs/artist/dbe2c33f-4d06-461c-84f3-2e9b28ae64a1.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 0xcf4ed6e562ddf0c397b7c03e9763fa53cd4c4eae94e931873728d8c18f9dc3ed. 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/FR10S2030732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc89483df6f6552ca82dd381857637c554bb07b1fc3e0d85d22db074d2e595dc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2030733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2535c4393f0ea49f5cc43757599487cf5c8fe3811f2bcde7078f315a749200. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2030734.
自从遇见你 - 女生版（电视剧《少主且慢行》插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6e33cbaddbe4f086c2e40e71f2c12e12a94ce3b675216963db295df86161dc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2030735.
自从遇见你 - 男生版（电视剧《少主且慢行》插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133f958e4ab8a3ef21ac0baf2c0b85dc5189bf38ab290e10926e06cf2d3ffeee. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR10S2030736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb661d7eea085e1906a8e6fbd999614ca0712acda065ca0776689a5ca76536cb9. 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/FR10S2030741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb52aed5dc49c39f00587b6e83dd621e02b5889d25c6152a411c735dc49025da. 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/FR10S2030742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25fbff237f87ca1d9525662f59260af6f9cbfdaab308e85775d474191cd7625. 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/FR10S2030743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738e3099f10d3fa01a453e0841067fe71a34ae712e58db44fab740f524110a1e. 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/FR10S2030744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fce8133788fd190babe6d7ea2a034fef566edcf9628c6a743529c118a8d78ea. 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/FR10S2030745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee0437d729c98061236029060a0912ab7bfda430e207f9b91ff1a4a750cd7f5. 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/FR10S2030746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e82626fd115024e48cf4d2e097c0ab1e02cb0d7f14b1bd82c0d2d013396b6d. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/FR10S2030737.
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 0xe4d21c11ba9fca74e1c17115c7eb18bc10a2178f48892f77a0486846fd609894. 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/HKG732137257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a5dfbe4891c171f03ba0ab11344ca9ffc1c9d5c2198b58416d57a23c0b1376. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:22:42Z), 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/FR59R2050282.
公子不可求（电视剧《公子不可求》原声带）
踏破阑珊亦是你（《公子不可求》电视剧插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe745f50b60ce46b1734efbb45b58566f33a2574d5bc4945dc726e831e4449a02. 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/HKG732293993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fefb3e958ff4fdb69714085e0ec81f85d1ba12243297bddd68fd5d6a929ac3e. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/HKG732293991.