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 0x4300b9dcd6a06021a8043e0ba2e6af4b68334c28ce6a8c0b94108a4260d8c9b9. 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/0e75d8e4-846b-4fe2-a1a7-6725c53c5095.json and https://artists.proofprofile.net/proofs/artist/0e75d8e4-846b-4fe2-a1a7-6725c53c5095.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 0x66fa738bc0047015f326b7882a3b752e96da281f78c634405cadd7ac88ea4149. 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/CNZ842200322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8410f199ce442655f8bab84a964a06e1da1653a9b69614e860a6b9fb5e8a7d. 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/CNZ842200323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dca8ecc157374b98cdeeb794962880b180a4bdace3e636f42038923c5da7c6. 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/CNZ842200328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0c49fb9712a25b71674afb65222ad392d7c7c028f519b2e8436503f479b627. 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/CNZ842200316.
歲月無聲是誰的流年 (影視劇《月歌行》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ba7a1038665ea065c3133208bead76f668b6df030967e3539411810e8e7d2d. 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/CNZ842200326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229ec9b7231d0d6f9d9ca5a73ec0607b2471c5a36d0fd3e07009a19877c7eba9. 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/CNZ842200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd6023141295e4485a344df9a635736a0b2e3d338a2bb20ec62bdf64d1adacf. 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/CNZ842200319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dbb3c814200d753b883a80f82a46ef38f0d60416d14c719991214e633ab86c. 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/CNZ842200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618e50cb74bea9a7342aa496761b2bb9a73d25f8264235ee762fbf0509807f05. 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/CNZ842200715.
好像都一樣 (電視劇《兩個人的小森林》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3a41bf0e081521755dc7372ea1cd87ebbb38b604cf145d11302cec68e30506. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TWU712204769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3f419f311e06fda4b3661dd8eaddf08cdac87ba9dfe4bc568a64483d04681f. 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/CNE222001495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc905c6092187bafcf9577e3dc66dd73127010a6d20d2d634e7aa613c50cc71cc. 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/CNE222001503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ee1b0f2903ce46202732290b6bcc22eef78c0a6625074218b81f4c58015610. 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/CNE222001516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3fdbd0f96eabc50ee025d319a7908df6873119140c442eac8b96a39ded61f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CNE222001489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dd6f602bf15f2ac6104cd96741ffbb5081f5b28abb234aa2b9f91308401007. 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/CNE222001519.
我們之間, 我們之外 (影視劇《司藤》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6116149b01e6538581e76cd1d8bc1496485f43bb52b80482486a30689d8a7c. 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/CNE222001524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0c49fb9712a25b71674afb65222ad392d7c7c028f519b2e8436503f479b627. 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/CNZ842200316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae495ba39ed21fb206ff25f0e38bf34267eb1bf23a8634cc3912057771169a7f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CNZ842200320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fa738bc0047015f326b7882a3b752e96da281f78c634405cadd7ac88ea4149. 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/CNZ842200322.
若有先知 (影視劇《月歌行》片尾曲) [伴奏版]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b23ab25b9f5b118035271045b0570c94b07218187ace35869c6f66ef5c6059. 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/CNZ842200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d287a7efbb0b09569584740228ecc98152d9372e883cd4836232be99289d0a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CNZ481600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce925586684f34001833343a34c6720b71b7e1416f0afb095d81645ae722ccf3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CNZ481600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b02df5c7cc9fb032f20016a2ea96c1c04920c3347aee0e483a49ad94010e0d5. 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/CNZ481600011.
每當和你在一起 (電視劇《三分野》片尾曲) [對唱版]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a7ae8c28c9607f28e99a80e7d16d27519bfdf879d476aaea43c90342f5dff1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWU712301813.
每当和你在一起 (《三分野》电视剧片尾曲) - 对唱版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a7ae8c28c9607f28e99a80e7d16d27519bfdf879d476aaea43c90342f5dff1. 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/TWU712301813.