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 0x27f19f5b453bd7a350cc861726741e7fbdce7f5263793a0e735e1e73eeb535ad. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2101a76-a2f2-4c2d-949a-1118f30f0343.json and https://artists.proofprofile.net/proofs/artist/d2101a76-a2f2-4c2d-949a-1118f30f0343.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 0x1849077eed67a5aa68f58b2e418350d988917b68de18466d89f9598e037c4b2b. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/HKA120509008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355de86c3b2aa387bc10b12444cd7c5c04f5b623150f48e14f14053dcdbeb548. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/HKB040601201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfe22dcfba7c95d426e5d8fac8b3e3db5640e6575566edb7b1f93d3383eb73a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/HKA120609015.
願望 (Make A Wish 2010 宣傳歌) (feat. Prudence)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b62436bf5c1f8540bd230d1d52e9e74aaca47855c467cab6c3d7bf47a1b8cb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:37:46Z), 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/HKB041200556.
抱著空氣 - (劇集 "最美麗的第七天" 片尾曲)
抱著空氣 (劇集 "最美麗的第七天" 片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30038413bfe0af6dd9dc5483c69533c537e54419526a9463d6837ad655028642. 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/HKB040700228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd4e08eabbbc4cadab22d5349b638dc43c045a6a0bafedd61cea2c6aba47778. 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/HKB040400113.
明知不知傻痴痴 - (劇集《秀才遇著兵》主題曲)
明知不知傻痴痴 (劇集《秀才遇著兵》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0309916d5824bf3d6e12ea02ddeab2d7b557b620785956bcb921c2127cc934cf. 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/HKB040400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298a02fa3ad144d07cfedae780ec6e06dcb6030e8c3136804ae6a4b9b2ff3e73. 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/HKE511800001.