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 0x869ce1fa1833b8367d8303875859caa8c87ce96783bdf7f310e764016ad8844c. 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/a590051c-cb6c-4e32-b827-ff71f7ff7c70.json and https://artists.proofprofile.net/proofs/artist/a590051c-cb6c-4e32-b827-ff71f7ff7c70.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 0xc0218bc65c28aa2a02a5428d4d89beafca72df5e57d9c8aa7b6ffdbbe147c45b. 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/VNA0R1900075.
Sợ Rằng Em Biết Anh Còn Yêu Em - Beat Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd17f6c2a1d140d424aebcc5498b206460a080c38becf6990dca2e98d9c627a. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/VNA0M1907266.
Sợ Rằng Em Biết Anh Còn Yêu Em (Lofi Ver. Freak D)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e6972e88886720894d1ae952b9b3667ee7596b094beffa3dc1c777270a418b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR59R2012845.
Anh Là Gã Ngốc - I Am An Idiot (Prod. DIBS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fee242d41ede91987936813809523e470d0e3f342c54b1d474ae4892cffe0f5. 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/VNA2E2310170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b5ba852ffb515be51448387db3e78ccfaf67b8862454f0f89d7ccb7b7b77c8. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/VNA2E2310273.
Sợ Rằng Em Biết Anh Còn Yêu Em (Duet Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd5e99d34e8cc3a57a3185e72fbe75c950e67213a5a113faa6bd91a9405c694. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/VNA2E2312559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cb474666840c9dcf76fd6c282f464fa9d3a68cb1014dc2e35a75df66b7cb45. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/VNA2F2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837ff6b36ccbc21650fa4c8b7fc808960158fc911c79008bc72a255c24de337f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/VNA0R2300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f777e2d66f69f1b3dce62280059eaf67066c4e0fdd1118fb02676587054bdee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/VNA0R2300385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3385b6b83bca314f1758c1acd5caef473d1660866e3a3b1308e7f950190ae04d. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/VNA0R2300383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96833a21a48949521463e9c41923f5486b91d9c9004c3e5c3f5ca64c5d281a0. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/VNA0R2400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27f568939456a092d758a22baff3ca33bd6404619310dc62365e4620002bb2f. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/VNA0R2401456.
Quên đi nhưng không bởi vì tình đáng bị quên đi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf9600602618f326d31aa6fc4e96c9a5a22e7412bcd085e7fb5d18c04f1c7c7. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/VNA0R2401468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b5418ee54e55d240dc1466f8c75e5852a10567b978890fb62d0004152ecf29. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/VNA0R2500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925d128f2d9722a913b80658f0722178283e1a244e5caa7a548747d156359f9e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/VNA0R2500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5dde09b7bae5d104c6d362f1e0c153917e3e0b6ff0f046687d35501794bf4b. 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/VNA0R2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf9600602618f326d31aa6fc4e96c9a5a22e7412bcd085e7fb5d18c04f1c7c7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/VNA0R2401468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5dde09b7bae5d104c6d362f1e0c153917e3e0b6ff0f046687d35501794bf4b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/VNA0R2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af4026aa5d5311f4984db48ae04639f77f21cb6ba38924f7d7f91109bfb0ac1. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/VNA0R2501467.