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 0x042d98926c5aa54b3096f4ab41a79a71bfc5ea737bffb8bde3d009e8c963a3e3. 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/fff735ec-5216-49f3-bf6e-68a7a90961cb.json and https://artists.proofprofile.net/proofs/artist/fff735ec-5216-49f3-bf6e-68a7a90961cb.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 0xb0fac7ea590072c4da449ca57d4020263a26b1d6a27593373905c5281978fc0d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CNZ632201167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171ea9a05a947bbee292c5126320062d42ac5a2581fd7e116a9887a8843db022. 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/CNZ632300626.
明日少年 (影視劇《明天的少年》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32c92a561b4c980ae22d0502387abb6f39b375eaba22d3da883df8e3d19ccc5. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:34:27Z), 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/CNZ632401721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bea9dc193a33ccaf3d4dd9536f2c55556178578632e72a596cdb0ba6d457318. 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/HKG732105030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410fe446e43e9d0b063673e7c23dedd20546e2236ef7414293a6d6db3c0af835. 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/HKG732105023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0701109743f134a8b15ecee4664670adbf199d65c1699931d7fb519d0ce884a5. 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/HKG732105733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b52cb55a20aa083ee70563586c9203eb48384654fde60eb0ec983c53388753. 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/HKG732103128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c866fd9bf20675b838a6e1f33c04cb3d524ef87791e04ed52af95d4c580139. 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/HKG732102872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae58a1433b48dd54b7b538d56229ab6abc8b7036673e51a7e7bfc795c1e0baee. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG732104049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb4ba9a9d0f046363b91642f307dfb35802cd48ae77335b692ca58e8355221f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG732132072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3355cf2de048bc13a15e99eb09e035b9eff2e9cb145ade079b46c08ee0edbdcf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG732102863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a328135adda7a3907225d39bdfc9c2ddbc21f093cce6d3379ee08e7bf3d8d2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKG732132074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99da559a3f9a1172eeeceeb95118c910b3760280224d879718f1ee00909bca81. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/HKG732132098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb2fa4a4c0c6034639e870ab78e0d5fb6d821e674ba8bab45100b061cac6416. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:25:38Z), 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/HKG732105715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49232eaf1683312a8b8d7be2e0882a05766cc3aa9397260b2fba7ff800056f3. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/HKG732104046.
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 0x8b916380f73d1f4963a811596290dcf0e54e6054d9e3e5e4de3f1e80d52f9068. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/HKG732105717.
也許我們 電視劇《誰說我結不了婚》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3858fc12d7742692727936b76cf9675f15e6a237b547ce77904f1799340d08d7. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/CNZ512000291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ba9b1d7a7063205cbed6719b172144e87c4dd73b3d02e06c1fa50590a1f72d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CNUM72500050.