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 0x372411f0d12ff4cd9820f48637d34332ae2a125e2bb11f1758f355899ebb73a5. 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/b25cb1c5-be83-486b-bd9b-7af619b3423b.json and https://artists.proofprofile.net/proofs/artist/b25cb1c5-be83-486b-bd9b-7af619b3423b.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 0xa02cb0dc0f437c3c5f942d50077ee9944ab53d776798845e5ef1aa064b829335. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:00:56Z), 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/VNA0F2103600.
Mashup Từng Yêu - Yêu Một Người Tổn Thương - Sai Lầm Của Anh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645f6299c65ec573489449f0678733e5dc95a210bc79a240a7a0fd722708c41e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/VNA0M1909194.
Điều Dang Dở Ngọt Ngào (Ost Hướng Dương Ngược Nắng P2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8387407f4c4ce86088c9342cd20370589196c238c9b92b23e929fd185c54ed4b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/VNA0M1916725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dda12e680c00788a7c7ac3e803c978ff484e7e407e5e2a02aedc10ddc9b7b7f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/VNA0F2101797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebc13c667c872604590720577a8cb87d738bf9d6e3dddc4fde5cec190613437. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/VNA0F2101798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ec9fd873718e9c5f7894a724d8ff5ff3b60f56a7768754cfbff2faadc100cb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/VNA0F2101800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9159db0f59a56dba5824ea990d77d826fac3f0ebb67bff7e606afb399b96358. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/VNA0F2101803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07306a8b3464c8680d5164fed55e39d401811d14e199d180ff07844537397aa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/VNA0F2101804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a89c622d60bb738b7104ec55ea7db41146ab871ee977485ad3488ebe069061. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/VNA0F2101806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f8a3f292e61aadad95e1cd76d143021ef973eb770e5bee0e343049cbdc9a6b. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:22:20Z), 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/VNA0F2101816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905d8d0fe043d3516fb421b074b8911b551f2e59b7771b4ea1d3752b26c44256. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/VNA0F2101789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc599f7b559e303871ce903918f3e8a66e9b0954074f772165086aaef8f75c90e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/VNA0F2101807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3cbf8d704bc3ef964a9d01e476ebc436f391dce3392d070312461d80edb5f7. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:29Z), 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/VNA0F2101808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70be5628dc5e8cd4db138e01f82d62708ccacd4b4af77dcfd2b09a83ad4fc9d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/VNA0F2101812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025c7ddbe71eebdd9dd54615617f53c5798760624f769f6a7dffa994224fadb3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/VNA0F2101813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9b1674b20b22f547fa6c4efba18ed0872da4a2cb9f22156560bf69fece4978. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/VNA0F2101814.