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 0x60d804ad4a14edaebe9a5d5de6ba791cb239366481f22e7df59cc7ddcb4194f9. 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/0fc2016c-67f1-48a5-8dda-76e21867fa1d.json and https://artists.proofprofile.net/proofs/artist/0fc2016c-67f1-48a5-8dda-76e21867fa1d.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 0x3122c672eaa7ff4621688b35ac1cc0aa01c2886a82798d34564c8a5eef06e9ff. 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/HKB629712508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02388ce73fa412ccf024c1bbfadfef21986197a36f5e1fb2ca1312bf7cdd4a44. 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/CNZ842300850.
穿過月光遇見你 (電視劇《月裡青山淡如畫》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab6873571cbc4fc3881a7155c8b9043f55933c43c9f3182d055fa3a1477b6cb. 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/TWU712205965.
有你的美好 (影視劇《我可能遇到了救星》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0347c9f7924efb64e0b21afd84cc610e85266d773837731ff59c11314be40250. 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/TWU712205966.
慶幸遇見你 (影視劇《我可能遇到了救星》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dad99e882089a2355a79c1e1ea6b2f36b1308859a37582db4e630fc99d399e. 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/TWU712205967.
刻入心底的時光 (影視劇《我可能遇到了救星》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5534fe574d43fce50d6f456bc2cd3325d6e5a247c1c0f06e64172fbdfa9cd6. 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/TWU712205968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02388ce73fa412ccf024c1bbfadfef21986197a36f5e1fb2ca1312bf7cdd4a44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CNZ842300850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8f8af8f65c1fa209f9924c7c60361255bf1794faeb4039fa4a5637601b4cb3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CNZ842300851.