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 0xb926b99564077d34727f95062aee048fad0900f0b017edcbb2f8f683d1a3d8d8. 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/6d16a727-4852-48bc-9353-3bb7d58e889d.json and https://artists.proofprofile.net/proofs/artist/6d16a727-4852-48bc-9353-3bb7d58e889d.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 0xf03f791a84127a8e0564a777966651418a82616a7b70472059fc2bb9b9986c9b. 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/FRX762242776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7a604d3f9e78254c3ac2e1add7f8233ba3ffd1eb0d8e6c96341942a0a49671. 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/FRX762240201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc80ccc01c28a4ba357d5418fd6949bfa9eb36254e6c07d370ca455edb629ff. 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/FRX872274192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a51aa95263e5ea879f1c04eab75d7c6b5568d6b0102dcbbeb6919573170695. 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/VNA2E2313177.
Anh Chẳng Quan Tâm Em Nữa Rồi (Speed Up Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bcce5ba20776e5e694bda6a11a6b4223923912479608e592c988c4053c2921. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMFME2310624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041e8a90411c71937a4ecc5464d6f10f1de299717b073cbaca141d1293a172ff. 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/QMFME2391372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4252efabd41c8703fdd6020be847d225eaaf122d12685923f12db54786e0b93. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMFMG2321821.
Muốn Yêu Nhưng Ngại Bắt Đầu (Sped Up Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791b86edebbb03298a39c94bacd83ce2199e38aa8f86c4bfc00142f7e683bc38. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/FRX762526263.
Hạt Nắng Vỡ Đôi (The PROfile Live Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a1ad86987e0fc59bdd1424ab60a77656ebd84f944eff1bd904004dfbc53b54. 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/QMFMF2557054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f49210adeda44a7f04de225e70a627e9a8e8fd51f26a6fad8932084ab8e52d1. 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/QM4TW2420047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3ad66f14a98e245300a18c4a694fe0b5f5195575ad5dbdf6f80533a49241fc. 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/DGA072237643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe292c6e995413a65ab1860d30bb878b4f01f4a9a33046e19111fc811d662ce9c. 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/FRX452204106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff9cd2ad97a400af66266e69ca9707363293596bd97e4dea6fffe8ba4b55a0d. 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/FRX282209070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4edc2a5b295ca031855ec8645ff82ba4874a564a99c1060746253e7ceb044ab. 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/FR2X42103866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc37b02f9c1fb6d27c437e8d144a74e51f8f2e9d3b334eb108809695e3f9d78. 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/FR26V2072781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43ec0e51aa2e81fca03037fb989673b96aaf3f8e085e15a03d92b899d958774. 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/FRX452257138.