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 0x6ad55e4a8c270b62ea4a8545f8e4b9b389bd3f7f6c1b4127f766c450ac4c7244. 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/78d04e22-5cb3-4b94-a455-584ba5d08893.json and https://artists.proofprofile.net/proofs/artist/78d04e22-5cb3-4b94-a455-584ba5d08893.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 0xc8ac349b316c36bc5ab426c9cc9327fabd67cedd048b3ebcf6ea1573dc668eb6. 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/USCA20601628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10e90a264cdf6e14519018a3886d1d8417fe0e7b572f0b64214c65f89248e54. 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/USUG11200816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ac32f98274a4eba9b1b683d62cd13d54a9b9cde3dbe8178e8d4786c387bd1a. 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/USUG11200817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf053bc621bc6e819c31e53a5c538f3c3c0a164ecc04507d6859df5be5f12a64b. 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/USCA20901962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335d229f6a566bc764ee3b6cfbf178f6ef9f05c2715e5ad583380fba20b759f7. 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/USCA20806761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7291b8a8bcdd5299bb6994dbfb493d1ba5a49daad31488461b022721f495ce1. 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/USCA20901963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57b027973e1842170e594e55a292b444890a1cd73bb5c4dcab7bdd33e0096b9. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/USCA20901964.
Rock 'n Rollin' - Feat. Tech N9ne; Explicit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98062c7db62bfe4189357a5428e0739f9c9e10ff1e11da0f82d92be264398de. 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/USCA20901965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d470e594b26d8b2ab54010ac2cab4ac1fc9d9c72a446f1ba8b64371bd194d3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCA20901967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018d05184c2a8373ceb94f15e082ad9e2ed68851949c11c0ea5de5f319dea870. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCA20902023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08099644c2135bc01b52db65751a198bbfa88f53b775c714dfdf1482df9ea28e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCA20701522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d4c125dd58ede7c51d9847472fab9e9efb902e9acb61ef823dfd0dc50c463f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USCA20901959.
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 0x622122610e76b7a91cb1a52f9999c7888c2732c5b628993ac2699139196464d9. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USCA20901960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210ad0810a5a59f6cdad2d4f1ffeaa102cd05ab66bff56843db5c1af07c24e39. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USCA20901961.
Be My Hustla - Feat. J. Holiday; Explicit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eeb3f35f31b15fbcb158cd05d65b7a36cf58eb80deffd10f5be90c7289366f. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USCA20901966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edb10ce4fb67ca57f3c2e53420bc30de4153ab42f5cc1ffa53c786b5bbd6b22. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USCA20901968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26a0bb50ed4ba56c425a400351351222efafe2c6b219c25fbeccf4b384810a4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USCA20902021.
Heal Me - Outro; Feat. Solar Mesh; Explicit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a72236d5a4184318bd12662a6b18db8a6885a8868db3f5456863863b89d377. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USCA20902022.