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 0xd94b8a9265f0878179e2d9f52cb7ea44f42f8a2f71306cdbcec8135f4b3f011f. 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/dda3e864-ef27-4c7b-9a59-632ce2b75b45.json and https://artists.proofprofile.net/proofs/artist/dda3e864-ef27-4c7b-9a59-632ce2b75b45.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 0x1318bfda7a587df6b3be3a1af8f7b7b8c25b28f454df6f65663eb8d99110128e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:07:17Z), 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/USTC30710179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aa9234034a23efa72ab540a72398ed735d08b723b1291b7d7c5bc31239028b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:23:48Z), 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/USTC30710183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e58f8a434f63fb94e941adb2df513d082ebe607e867492431a0074206575a8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCABH1253244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2085fb7eb16597b2a80dc024a76e0f26a9692348673ef7002ddb6d0214426f0. 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/TCABH1253252.
My Life & Rhymes (The Instrumental Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8668512faa8813eeeb06bd8f50e6b604807fdbeda43ed6edb4029c3c58e137. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USHM81707888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ef4b09a55f83de0660fa05cc62fd53c6f0a975d003cc6a549c6dd3208fef8c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES51927470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfa75b3d100e7dbcd0b65d402fd76362a660588c988f704ee4d497262195051. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USUYG1264302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9403bb9d0b4c2a8f21bf97459f6dc29cbf5bc5fb58bf2aee03580920ddbeab. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:29:20Z), 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/USUYG1272518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4989bf89ae54022f2ec0ec6496ef2238090735b62dace5e08f84af20657913. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USUYG1350204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226029a2d0f7ee57de4364d49505e422f73ced793ffca661c8de97aa095805cf. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USUYG1355669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b80e4bd35dede4c850d2a0c3c7f899d74400e8b26e3686ad393afd094ec5f3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USUYG1475743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52148c676f33083f6c891a8e15a2539ab4b22f7a2abdfc453d01910313690a4d. 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/USUYG1488375.
Phong Sương (feat. Uyen Phuong & Chien Nhat Lang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dfbe7228f199f63d908f74925a46ba412e30634b424310986fb962179288dc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USUYG1515709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3888dc7c8155fd1bf52e90f6cbd7c907b843b186462414b6ce968e58be9b49af. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USUYG1521497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca35a7ef124bf240c3de15e7d7d381a9cf389f6b63f0d80957f124fbc106d60. 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/USUYG1533497.
We Go Hard (feat. JustaTee, Karik, BigDaddy, Andree Right Hand, Suboi, B Ray & Thai VG)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d89ea22f869841fb9ce3cbbe7f9557063e08ec2a61e793b34d43f7aa400e1e. 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/US39N2305794.
Việt Nam Muôn Đời (feat. Thai VG, Liu Grace & Mikelodic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470bd43bee285ed24c411a83975684d3e6b9f572fc7d4024a9056c0f84323430. 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/US38Y2301438.
Việt Nam Muôn Đời (feat. Liu Grace, Mikelodic & Thai VG) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bff3f5ff17221f4e567115111f43d383b00296e02e3e63fd331c416a62c2e0. 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/US38Y2415240.
We Go Hard (feat. JustaTee, Karik, BigDaddy, Andree Right Hand, Suboi, B Ray & Thai VG) - Lofi Quanvrox
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef208ccf756569eed3910f2d20be070b4f7708f7d6c54e85b9a7b164f07d10ac. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US38Y2415601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1efdf12ec822f59b0cb241e09d9e9c8de14da67bd184dcec0299360ab56e6. 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/VNA1M2284589.
Việt Nam Muôn Đời (feat. Liu Grace, Mikelodic & Thai VG) - Lofi Minn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adcfb21cb14369ce226c09935d0d1039c7e87ca315193908deeae108861f4b3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US38Y2415554.
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