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 0xdf05725d1c231dad908eae15ded186a1dd54f0fbbec3570cc1f4537f3e2a78be. 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/5498b537-e09b-4d2d-9e69-9f91de5c3cb4.json and https://artists.proofprofile.net/proofs/artist/5498b537-e09b-4d2d-9e69-9f91de5c3cb4.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 0xc1e5346f08d5e48d3ae3e7f379d867926aeff0691a7057986e7ba795a21c4fb0. 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/HKI310807002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292b95bb63a6ea462340ec35c44797d6463cf8d650ae1f1d3f155002109f5d54. 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/HKI310807004.
感激遇到你 - 電視劇 : 野蠻奶奶大戰戈師奶 插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c61d01bb8f719e43bed29012fc3ae1656b09bc02fb49414942a064bea8322e. 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/HKB040800271.
最難過今天 - 電視劇 : 野蠻奶奶大戰戈師奶 插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a11bc16838f4280c2de2040bf5cfc8d6d5e8036abd2c2f05b4a9e72b11959e7. 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/HKI310807006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55000c33f985502b0239d5dd42b89ea4329e4555ce780176aca66d2438de1987. 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/HKB040400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb371a4891cbd4f8eb9bb057ab109bc87db5353a36ca55a4b0ace6a1e50c0d5a. 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/HKJ342200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47793837bcbc8438d6e3d5c85f8af2d2fe2242176ff3f93cffc1a98d98ea122d. 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/HKB041300606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4fae3cf2a985aa6f82abd8449a039f55b6e5186fec1ce006b426082e08d0de. 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/HKB041100526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7d7857fbf1b79f9d30fd485b0d24f404bb17560a8976973e776f351fd60c48. 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/HKB041000460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05cdee0277c9f78792008bac76af90ba3481cce07b208b0f28b30c59a2d6c14. 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/HKC840800303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be6ecee06dc522d41c616669041883dee1630ea8e15f25a1ab448e6992ef895. 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/HKB040700194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630c32e79a5851f91d16f41bd30c90f85a616e558dd6118bca3158962439f42a. 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/HKB040600147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be6ecee06dc522d41c616669041883dee1630ea8e15f25a1ab448e6992ef895. 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/HKB040700194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90899257a042cc74c97cf91713e729c0d66ce62a6038fe55ff9b2519a5ce3eb5. 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/HKC840900469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14f0960066ee57786ce0f99e9258764cba61e48df163fb5f7093fb90ae0c372. 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/HKC840900472.
激光中 (24Herbs Remix) / 舉高隻手 / Respect 就 Ok
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79394a0fd11ed34de704a2940969d155642457bfc8a310620d78e9a13c736c44. 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/HKC840900457.