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 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 0x2349842fd8645dfd55c8a6e4d7a03eacfb7512525ccccbb33f9f8f833293421d. 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/8cb01db6-7969-4389-8d2d-338629e7cc3b.json and https://artists.proofprofile.net/proofs/artist/8cb01db6-7969-4389-8d2d-338629e7cc3b.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 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 0x167bfc3b5e5142c58b0ea63f56ebf71c9a371009eb4c9c897b004d9f53c00307. 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/HKG631882032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9367fc243b481b15c95b4b63abea3992365b6ab5eb99b00eab91229abde3f6c9. 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/HKG631894001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd504ed949020f2bd797168a698925ba396846807cbac13ae6dc658599b87c2d. 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/HKG631894006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12929eacfd9885736832c2f1ee003ca011aeeb43d62bd2023783971a1a8b19fb. 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/HKG631893014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec881b71a3eadbe162634644b122a94d3c5cca8686d9a7aa4481e7e35d13761. 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/HKG631893015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d89050b65a42867feacad59f02cd26088610ec8748cc73d1c2e0ca513070c81. 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/HKG631892013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952f846b244ea7ca6db79c84c1f8ccd7f5b5769c14fa7f5eb98071b7d3002baa. 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/HKG631892017.
仙侶奇緣 忠奸老實人 (電視劇《仙侶奇緣 忠奸老實人》原聲帶)
正義柔情永在 - 電視劇《仙侶奇緣 忠奸老實人》主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725de9e7a9d4e1cf3c3e1061f63624b232ef27614f7c1f63bdd59e5d1957fd1a. 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/HKG631891029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae92d67304dbb6392ca7878cab97b409d6c52da4c4bf90ac8ea8405ee44d3a95. 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/HKG631891030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560faba6532308b72b0e38f1100e81088b4392601d4fe1ee137364973bf9dd27. 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/HKG631891031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f237ef8b94e38b03cc09a70368114bc82144d0e83248af9ec8bc09d263cf94e. 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/HKG631891032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c9d12970b4b8ba342078b5719939e63fa0d5fe947542986ec0c1ae21dbe1c6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/HKG631891033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7496421e3267740564cbdc008c485cb78b37f79123de7e645c5cc834858274b8. 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/HKG631891034.
仍是痛在我心的你 - 無線電視劇《今生無悔》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3d87012c7d4f8df6b76f2e3bbca77cc20daae4fce674a87545b5474a9465a5. 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/HKG631891017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf883047994625a330a6e3db750e5e8543ac010ad5a93a829637cfe9098662f07. 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/HKG631891001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c5b0a9b4039ba5564404529649aca16e477dacd3e6d7b2c220de58703b43c1. 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/HKG631891002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d2a4b384d569e75a8958c7e0393500731130aec3d1315ddde8f128a7c5a681. 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/HKG631891003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de5e983facddc948fe27356679e12001e996b21926e0651535334dd0c6e119f. 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/HKG631890034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d791567fb6719d3df5b6a0c77afa5fa342a884da5ef6ad16d0567579bd6e584. 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/HKG631890001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638bfa3a66ef35025f617925a44a04f3f2a37aa206f25c07ad330b1829cd46cc. 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/HKG631890002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51278976b93bcc6fb8b6831f77099fe8ba5348804fd3bde35fbbac561af33199. 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/HKG631890005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c09e9c6e832bd565babc0c2e37de38eec9cec0bf0defc7509fdb361f46726b4. 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/HKG631890008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735fdc0eec7af917e264b1f780fdb9b4b65624e67b9caef4b34baf92f1aa9e79. 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/HKG631890009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e59d3d55794c4e0dc7478c8e4587c90afd76bc98a3ed5f8a2888fa4a5c7288b. 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/HKG631890010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a5c9279d4238f272f3e0d3222d64be5ebda9ae6c4cb7d336ef271caf37f606. 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/HKG631890015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1e5786691adc7a6713fd093aec90a32fb9ab25ca7edf4ed15b244bca2c86e8. 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/HKG631890017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70065026b0d96d580edbd2d1a64fac67ba3b687fbfd56b9bdc07935c7d235a8. 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/HKB620300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbc2b8aba88f2cec9444ad106bb9e4ba97931634a0b153de9bc7f7cc775756d. 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/TWA459700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577a9a4d595090a78823b52a0738128178052a272bf3e4ad98ad63a7eab4bfef. 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/HKG631895086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9899665a17a3a9393c0688511ab50030a2d9e41023b916f2ea1a685c52c359. 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/TWB819613308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e8d06ea427bf12739f12cc16eb31011782a9ea601d28780812992820ed2361. 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/TWA458500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9c53ec86b90fb3d2e98f2cf43b0c33223ca81163c7bc7ec1c42827db154840. 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/TWA459801803.