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 0xcd2c478b7f0ef3ec1260814d8c78df48eccfe469c06a1fc31446fcbd593d58ac. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd8a7d24-af1f-4ede-8c73-18ccf2764099.json and https://artists.proofprofile.net/proofs/artist/fd8a7d24-af1f-4ede-8c73-18ccf2764099.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 0x4401d56efe86207e16d61160dd7845e0c058079e22945dfb0df0b25876d95bae. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TWC931400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dd3c783c8ed7b286a2cc50c05516f7874052459282939228adb249472f8770. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TWC931400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a67356c571b379a18aae513684e4e1f4b28160883bec2c2726a5610c12676c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TWC931400038.
失去甚麼 (網路劇《北京到莫斯科》主題曲)
倒轉卡帶 (網路劇《北京到莫斯科》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4baef283c06f7a1f62fb7fcb59563c1f84262f62b1cc12a4eeef2eac14c49cc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TWCX12000808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec10279057a51d65ee2b4bb9b224f3af7a568f26de9f8dc11175d5f4be87c563. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TWCX12000804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8291ac04225da2b0116fa474b86d4b43e06ba258d4aca77fbfd1aa2817c4b9a. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:01:48Z), 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/TWCX12000801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec10279057a51d65ee2b4bb9b224f3af7a568f26de9f8dc11175d5f4be87c563. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TWCX12000804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd25ddfd4a1d71da1d9a0cf2570b84a813fbeab28ce6f6566cf2213402600070. 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/TWD952207101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68438fe8dee1572b45c76a18fc3860210b4b2a3adaf6bf98c954cfd260743430. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TWU712400764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabda96c3b2d9b3620bed1db88c715f045c7ad15e9b6f1d4a1cb508df10276266. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:37:24Z), 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/TWU712401209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8367c3a493076b504a1692dd92bd4eafbd3ae633a3381fdfa3fb15edf2b8fe. 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/TWLJ52400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117b093247509c7a900effb2fddba97f19a6d9d78c368e6f6483c61f917698d1. 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/TWLJ52400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217af7507b775b480f52b1e7a0c2a4a57252416f6fd58a844b6e0f4101dc4e64. 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/TWLJ52400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cbad72601de4d9925d12efd24b7b2baba3d6f9e3c2a943ee2e5529a94f6b90. 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/TWLJ52400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8367c3a493076b504a1692dd92bd4eafbd3ae633a3381fdfa3fb15edf2b8fe. 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/TWLJ52400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e702b0844d1610d3df917fba2cda522ded8af3f742f127a607fe7fd13e1bd40. 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/TWLJ52400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffbc40d84862d2746369979a78ea00eb0d613f795493d670ef3d4af13ede332. 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/TWLJ52400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876e633ef92eec889e69be920859f40cc69ada76829550670ac27f0cebc829ea. 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/TWLJ52400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e41f09b1f58328fd7b8296c4252e135b781bb121b905ef09086bbcfd614c57. 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/TWLJ52400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634c531a955bd3ce678f4d8d9dae7a76756f1c6c58777b7e6f822b0a77a7df7e. 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/TWLJ52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a89a9c6c8c795354efc139271d47970b5da60310d03055ad9d5bc05d955a26. 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/TWLJ52400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e269c253c6639c5cb830cf0f69da790e236e3f3d37d30308ee313a9e11ebd2d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWAE31902354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4a63d50dca48d90e81aec961b3e8f8d9be5dac057639430817a6c31038b33e. 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/TWP011620409.