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 0x72d009d3d9c0fbf91f83d14856085ed8f28257b04dd4e98c291684b67d39b064. 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/b779783f-c6a6-49e8-a9c7-65926b51be11.json and https://artists.proofprofile.net/proofs/artist/b779783f-c6a6-49e8-a9c7-65926b51be11.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 0x18cc2b33ee92c79212fdf4eb845b3ae8c3c74afa06ac6e4405ca5f9f0456a2e6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAC012400560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb5640ae85d6d21bb795ae2897aac083b6026c7d89e462dc9fb6f8449c463df. 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/ZANDU2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e870e83bd9b4a3b5678c34d5a8b15b26e16ad26de7db206b7433ec878860776. 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/ZANDU2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17482380194d0452c58d918b869b29c3c8608e4dced26b796fb84c073a8d9591. 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/ZANDU2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fe34c2ccd16b5567faaa4fd4b194a8d92fb31150342938db885596c08f65d8. 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/ZANDU2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe111afff0db194a6d5794577e0c60129727ada6abd253ed2e245dfd0eb5d10ad. 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/QZES72465448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf49d40324912e9d27dd0b68db4d60d5ab047ef045a9873c878c0b7443569a5d. 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/ZANDU2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8cef64536e36af042d81bd21cf7698b29f91bee5bb144fa38d54aa9e75f174. 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/ZANDU2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed809126b531523c00d9fee594fa7688a5c267cc601b0696426772a747a4fe4d. 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/ZANDU2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a19d65ccb170dfdd2d43d471f26f3f6e93753d9ccb2b9820ffe397633da04a9. 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/ZAC012301473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d67a78e18964c17a643ccacdd5ce47135010e52d744e7bdaee293a82c047dbe. 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/ZA56E2420671.
Morao (feat. OHP Sage, Nthabi Sings & Romeo Thagreatwhite)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53088a026145035ab01170a06f2816ec99ef1cdab686564cf8d24fe80bcb4b39. 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/ZBDTT2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6386399a45e2b3ec74758111543dade58fa998206116b4c7c4036281b3d006. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA56E2420674.
Africa (feat. Romeo Thagreatwhite & Dalom Kids)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0b708e50b061959ca3ab538453d40cf42995649ba5f4024c4dfb56b663d037. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA56E2420676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76b0f84a634e15bc9f0e1eae96ec35896b82b9db078e6d4d40c753ce04433d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA56E2420677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07093d7fa8b08fd386a8492ae4ccbadd1fa36e0de1f06d2d1c0660f41ee1ce57. 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/ZA56E2420697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53088a026145035ab01170a06f2816ec99ef1cdab686564cf8d24fe80bcb4b39. 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/ZBDTT2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e10f07e9465757ef24dd8ae6b8d98820193a9241fb221275adfba037717043. 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/ZANDU2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b2736b3ccdd3528029ea1b50e149faca73aa3637a8ca8db32beb74851a8f22. 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/ZAC012400585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6f07027d5db641e88d3c66c38505a54f3ed65ba9ad2ef3da09ac64c8088525. 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/ZAC012301021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04de182d41c465b4d84eb5aea093c63b42b9cdee6c8ac4e52aa2065f9670343. 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/ZAC012201632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3253b257b6427378fe648b9fa0021a878fdb3b936ef62414d4c9ee53dafa7b92. 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/ZAC012201538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293c5beaef818808830d932233065746245398034af4727a2d81828a0fe76e38. 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/ZALDB2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a01549b2329ea8fd5763e379ff4e6ed2c2906a606c05bce50850707346f0d54. 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/ZAC012300350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66baca9bf4721bb34f337e4f9aecab7358fe93d4aa4bb9407b824bc9b10ae74d. 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/ZANDU2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fea16d31a31d802ba8e5b59fdd43f0d14e93997200a028f4a148b643aad0ae4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZANDU2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7b0bd1f45ba73c25404f3763db71f897b6d1f1546af5ce4d2f5f2c63e000f6. 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/ZANDU2500047.