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 0x3f98cc92905d3473329eac49977d489a28db7d11db525cddf496e762885335dd. 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/c8ae49fb-32b9-460e-8988-ef38d4ed57ef.json and https://artists.proofprofile.net/proofs/artist/c8ae49fb-32b9-460e-8988-ef38d4ed57ef.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 0x9694678915063dd9c00cd87c3a55f3bb4b87217accc44d8900da6bfeff30bf49. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BXTBK1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395517627f1ed9889e5b3958e157461fab3d4d160e9cee73e47e695ea7499abe. 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/BXTBK1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc73639432d638d50d2e8b2558ed1040f4613488807042bca3656ebcdb9589d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BXTBK1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49e94d737052cc40d424f3488533610b3e50b518d7faa8b5a5980f46f3be1c9. 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/BXTBK1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4586f183581158c7297021ccaa061da9eec4b9e4053a0b9354ffc91bc5ba846d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BXTBK1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7db89daef0ad50c3daa970c6fef764e6a9f682a41c9b8aa86f0a79af063bd41. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/BXTBK1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e8c1f9be23b96a878503276296cc3903d96a1fb35eae8720c153221fc3fa17. 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/BXTBK2000007.
Keep Your Hands Off My Baby (Faixa Bônus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7860b9c08dffb2942a46ad0d8e7a0ed6e1df38fc6d5dce295c39b50bb84527. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BXTBK2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda92eaed1f5847bf8bf2e77a1858e772483056128ee9dca8080ade7ca180393. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/BXTBK2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1b36a96328b45b9619d181fedce16004e1fa14efb010152a832ec354b24549. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/BXTBK2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5317ec173817f3dfa37b1a83e277887aaf0e28ba3aeb32d9866b36766a8b9ff. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/BXTBK2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb213a8f808675224baa649d55236da8ad9b994af8459e4f96d576bd76582eae8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BXTBK2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cb493952cd41ae3cc9434b15a00829b45c4251d08f8a7c752a018e5f00515b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BXTBK2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4de291022841b45f87ff5aed9196f801afcb23e648e61fcefdfa504a152de4. 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/BXTBK2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ced55f1037160f59d4dada454ef77eb4d8662d4b17e5aa874c8b1ed3026bc7. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BXTBK2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc65033514f357880db83ecaa67f938e7bbbfa546b37f21e20e1884758ac9c4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/BXTBK2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fdcac1307ed8e539b537cc3bcccb6ea4c1d403418aa7b7f6525a100ca7fe93. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/BXTBK2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955ec9aded51c903d640cd34b86a3c98d5969c45da80730e7adec54529709d01. 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/BXTBK2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6665d47321917f4bee5c3fea1348f8aa5a77e23b14c8c99257476766650c65. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BXTBK2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d45df0b8ef8798c0d706d02a2a173ee53f63620e9f72f07efbb59ba71cdb7f0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BXTBK2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d501231bc72a0c160c69e36903c3cfeeb5adedcaf03cde473c1cefae2b8fc4. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/BXTBK2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea992e6c8a5658551a2423d1a588cc88350775d0e2846584ed7808e72e70e17. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/BXTBK2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42709217c9361c26d0257a1a1f91f40e02df398f457d065ab8a178545d7a0fd. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BKKHH2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3625c8d707c9773bd295cc3cf4ba7acbfb25f5b96acf1c9fde89eb49b47e8231. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/BKKHH2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156b9ed99d39d2a49dcd8a045949d925b890df4e38e826c31ec62338812ba1e8. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/BKKHH2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c92b2f5a37185826ef676f2f147a2a718caf7dd30347f41609281891cdb0a5a. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/BKKHH2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bd33b5991cc5f887d11ffae178aa49d61e7e5ac316d9faabc670bbe8c7b7cd. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BKKHH2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a3e8037a64adba7c6d1d69b96b8cbaa60cff22c73cf5121e7f54b9a7c2520c. 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/BKKHH2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983b3776ac6a6f8780cde1309dd2f6a035adfc4856b50b87b30acbb7b4a768e3. 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/BKKHH2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d10b047fa31a1763713304f05fc6b8f128d27612d1a54e88da7c4f984dfd3c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BXTBK2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fc4dfc3f390f21e3339fdb1e64c3946fb978f907a509628e44501ce755cd70. 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/BXTBK2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d535b8eebdab6ba06698665c1f7e3bbb621c1928ba06041ee35fdef795c85c. 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/USDM32405131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355a18e4e18121971a358aa07e8a30111d0851dea8c3f19b57c229f0b37719a1. 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/BXTBK2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188c108359086de7c1c2df9906262965c4e739acdb4e168f2a35ed0aa5e75c8f. 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/USDM32405132.