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 0x39ee9f1926a634dc340e0bdedd3531feac821001f5066733928bd5708717f38b. 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/1fb595c7-754a-4e01-81fd-e2e7158d5ae5.json and https://artists.proofprofile.net/proofs/artist/1fb595c7-754a-4e01-81fd-e2e7158d5ae5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
2022南面而歌-新世代台語歌 原創作品輯
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 0x61577e540b9ad17733f03da146b537d28ab1c732131fabfe89e6b883e1764d88. 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/DGA0M2427978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ffaa78ee64ddeb65375de0700b1e1df903dc175ee74c89d7ebf4c0f5df9d2a. 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/DGA0M2427979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f9ea6d8595ff3cec6101d0059482dd064d1925ce1cb541672636e5335e2b6f. 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/DGA0M2427980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6d6f33d7aa5364bd40876bcd439f611005a872185f94d1b8c345c8d197d2db. 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/DGA0M2427981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90620cad4195dcb86536d3dd06c2494c006a6939cbe3943aede0c0d2fc4891fe. 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/DGA0M2427982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d73e966323c3d2ffd9a5471e0403e12250bf8bd139cb95ec55c8f882bdf31c. 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/DGA0M2427983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca669107f24a9388936ce411839513bcc9ca15ed91d2834de2f8e579dc4a741d. 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/DGA0M2427984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e45b50b02623216fdabeffd8b8dbc1374c61ed09cb3728d627d2964bdd7fda. 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/DGA0M2427985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8526ec7fdd9a8362ce2f2f1f111f6690168ec6d7e73966afa359abe1505b9dc4. 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/DGA0M2427987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942392cd95880ee5954234a90a5685c5a803a29254cb531b2601da1cf944665e. 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/DGA0M2427988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43464039bc3c665ce9cb4eee6665410bea0e80ba414e00afdd9662719791689. 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/TWU712103629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4329b9071c007b0c86925bd683dbe4a583cf60c68549fef6d7afb88ff04e4f69. 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/TWU712103630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525aefb0d7b9a4e53a0a036f9309bcf8d24992566754d56a0cba7038c72c7b47. 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/TWU712103631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230a6bb1847194666ab1649a1720bd698989c1825923b478328f103c77944a77. 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/TWU712103632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada3ee2324fb9dcb5daf7e789a1f6ea2d8c21f865211016fe1d7a953be23e029. 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/TWU712103634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3a94421b9f0b9aa31e6451adc63c2d12493a9d6f7d762fc76d9e69a6ae4636. 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/TWU712103635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763b80cc0a441e98e65e7411ac1307e94521eceac55725abdd54d1507044e81c. 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/DGA0L2338981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bffef6bcc863a85764dc1e15980c37aa99b0045288edbca1b7f5744e5091d72. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DGA092349962.