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 0xebc5445622b6eaadcf6f5a7f3e6169e51f0f846bea11c5da72124b6f398372c8. 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/87315366-5aed-4614-a857-ee710f103bd5.json and https://artists.proofprofile.net/proofs/artist/87315366-5aed-4614-a857-ee710f103bd5.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 0x4211baf5a814ce8f3791ffc6827cfa090acd314e130bcf936f948d85966f3dc9. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR10S2501419.
Hổng Có Ưa (feat. Pháp Kiều, Snoop Dee & Nhựt Trường)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d2f049a62f6426d576a8d79d5718d31ef5442aa3922ba71c59ea4bbc08be40. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US38Y2417294.
Lối Đi Riêng (feat. Pháp Kiều & Hoàng LV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc58dd701bbdca3ac1597fbedff95fb4534e76dc322c2052b12910bcce6396a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US38Y2417300.
Hổng Có Ưa (feat. Pháp Kiều & Snoop Dee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3536bdf2bc990445a647109d323a6e0445567ab121f829b4ef6039e60c63aede. 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/US39N2310744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932674d09d7b1ca7a9d6f0a3d0e51e5b1786e642a9932b5f98f2caa04d3b686c. 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/US39N2305800.
Như Hình Với Bóng (feat. Suboi & Pháp Kiều)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0539950e2f74a29e6dc48eaaa87a1ba738acffe710e507fba0dac5330e50a2d. 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/US38Y2301437.
Say Bye! (feat. Pháp Kiều & Dương Hoàng Yến)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771882c2dae510603575082285ea20ebe22dfd85f42cb01a168532f472b2f3eb. 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/US39N2313857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f231eed50fdee5f152af8b24fec4a778a3f1d927026bb5bb7d8c5404431ab8. 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/US38Y2415241.
Say Bye! (feat. Pháp Kiều & Dương Hoàng Yến) - Lofi Minn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5360494c154e4dd54428d39f33fa98489ab27eff19b2905e2fd8abe249770802. 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/US38Y2415555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd600b453d25dc33585b32d56d6442d9efde73cecfe32d3a3df450169c461ce1. 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/US38Y2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3487eebbe265eab8af578fd6ee7eef0e9a492c038b04f8e388cffc73207e6716. 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/VNA0R2400045.
REGRET (feat. Quân A.P, Pháp Kiều, Quang Trung, Ali Hoàng Dương & Lâm Bảo Ngọc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687ed6c1776eb271535d61985914cb3e4c506ed143123c7661c8701c343e5ec9. 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/US38Y2418914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20f9effd1e4aaadc79ccbfa877a6a8a5d0bd807a562d5ea9559366522b2190c. 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/US38Y2504849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9a25dfbd6348e48cf31da6d654631c0badd6d08d071a762d18d309bfdbc660. 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/US38Y2504850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dde8695697e9e4b685bcc387f5eb328fc8d831525f2b280a930272aad2b8ba. 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/US38Y2504851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cba00d78e2e90297377ecdf0c854b0fc9f4622225c20d633e90187677b54fd. 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/US38Y2504853.