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 0xbfaa6ee87fc39ec1f9e18561105e94ee5af35e20724b2813a477adc63afd89ff. 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/90f09439-98d1-40a3-8112-e4a312102c6b.json and https://artists.proofprofile.net/proofs/artist/90f09439-98d1-40a3-8112-e4a312102c6b.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 0x3a20aee1683e2bd096c1d6345200f6d92efac36ffe3430868ce3e5b556b5b557. 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/HKG732274401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d1dd7b0bc5b58a609f60c2cb0b013cfbd05ae711bae23079a6e62f02ff9c9a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX6KC2301175.
门的另一端（游戏《原神》2021生日会同人曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97fc32dea748af47baf16246d9adf537944ddbc56a1bc5e665bdf7aff9d0da4. 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/TWAE32101681.
Honkai Impact 3rd - 「Cooking with Valkyries Ⅱ」 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc204cd70f52aeeb8c9864529b903aacdb52d377592e182b73d71de0b1632f1e3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX202088619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da5b2b97ba24c62ab07fd196a192c31b5059c15b65767bbbbf2edf153403713. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX202088620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3969f347a72714487d2154a9ecc0c6e0db2ec89f994790a3fbe332f12dd6c416. 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/FRX202088622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d47ff4178746875464da2c93fc30219d0cba8456016c768469c69bf187a3a8d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWAE32400445.
本小姐不要 - 《暂停！让我查攻略》动画片尾曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94693de28324db9ac29efd56466be2f5c615a3bac6da26af712a4347c5fac421. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR96X2251987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51db1a9fa4f17db779624901bb138c51cabdc5554c9c71aec71833a2355468e5. 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/TWAE32400777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804b1b46d488240d6bf64db7eb1bbccda4895c2fafba593e1fec292356a5486f. 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/TWAE32302466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063a6639460b45051836f7a4ee14ff35777a6f260ca4fdd9de9f8915f53cc279. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/SE57V2312901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8081224365b3944b6420f502f7fbf92e185aafa4370c43941e74a91f423872. 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/DGA082202046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e77f20d54585c02ce0ac391bc8655d6498210b435d51dae611394d34209655c. 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/SE57V2357598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4597e3179ef46956f13278a9b191a8cee8e2b3c0edc219487a116c4419ade4. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/HKE022302876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8496bc3295e3dd9ce82fc4d2c0e6d351da9a318a27699fb7f8bd04563775fe05. 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/HKG732256618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52551dabab323ee88730a34ed0844f2cc1558c241b3e483743e8c32f08de7c3b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWAE32302464.