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 0xee2a492390bc95ce167dc4a8c6b90036ab826b5964ec5872dbbab3d5765a3672. 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/d105df1d-6ca3-4e5c-89cb-299e9025bc5b.json and https://artists.proofprofile.net/proofs/artist/d105df1d-6ca3-4e5c-89cb-299e9025bc5b.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 0x3867a1ab9f823f953004a790cbea820cdff00fc79c7fcc7b1aa5f30880e37ced. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR3KP1100950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a31ce968265d8b80895d0c71956f6493caf820eeaa3b3aa784b3f9381b8c8c. 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/US83Z1107557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c66227a9bb7d5d7261654c48b4a1e60c57f35bb43e32672e2711e86813d5b2. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEKB71004582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9ad00cc3e36dd05d91609f667359159796ea8326882aba16b33ef302d1f5a8. 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/US83Z1448570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98df61422a5ce368aca84c346134af4fbac69445ae1dc05f53cc2756f1166a18. 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/US83Z1448571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3e14b8f68fb548616b15248ec3ebedbde563efa30b514ce3e5090eeea1789c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US83Z1448573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72781856d1cd85c30b6e6ea1b1a0f0b61cd7abe0c1051bfaafb324c506418e7f. 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/CARE91400789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b12ec001a8d025cea86f5b3f2ceb1099bb1e67ed3706575113d880dcc2fd86a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CARE91400830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b7aa0e6adebdcfe66ba10fb086e096d477888deb3d0e965565f71f36658fd9. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CARE91500850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634687c5a1a4b2878221be48e0fdb831aa42579af0073046e11806e454f9324e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/US83Z2128719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f5b0d4e66d500d580211bf30927576755271d750f0fc3ee7f5f36c227e49dc. 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/US83Z1511292.
Hammock Dreams - Nikosf. All Day I Dream Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447b9710c7ba26665525edab6c496d0bf7059b6311a3321d3cbe9a04923b29e1. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/US83Z1532179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd911dedd5d6b59a409412234413aff1e564203aaa13a5f00731bb726e63f3309. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/US83Z1643859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e3e8a8adb464ee7e6ac8529e51ae9bbee5d112932ebd11d5fc74fe7ee4e963. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US83Z1656765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a3ff1ebfbfa548ac01c505a1a13a2a2a705e8922e6cd4e3a8ebe0aa4741142. 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/US83Z1649370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b42078e5413ffeccb0f503443ad7f7c29fd7ae8889f2dcf179d1907130275f7. 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/US83Z1804717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1f0166f0a5cf12475695caa15b2ba8c916504b5263ca5aa25b6ab68a3be564. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/US83Z1639861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcab9fddefda46a0e2a2e84edd143ccd7a318fa7e0c4ceca288750c2d10d9528. 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/US83Z1472298.
That Jazz Thing - Ocean Gaya Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0c5b0c39278dff28660e13f3c4a37f107f19c841d027c67522aa1450d2cf7f. 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/US83Z1520210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae13f08148e07bf08f79b406f024017069cecf6383d7a63286d2713211ea960b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US83Z2331391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bb96fd6c708e81987299d0c0291058d84781e381e6e26ced0d9d491204cd74. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/US83Z2509399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ea329e1a2dc530efd74e741d1900b7bcdd2eee7207f2fbe175bf878614b2a1. 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/US83Z2509400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42aa31cd28db6d4635db17462f1c033a5edb45880fc9ddbd5dcdc5581c7a9686. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/US83Z2509401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acd4c20cc7a760d7141061c5584171df813e8b366cefdb7b4e57c59c6cadb84. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US83Z2509402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf350d41f9ce13991f58e8892082b86965b3d386eba5b699253c27df8f20e4841. 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/US83Z1338345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c75b66d56def5714aa2bbdaf80a64d96dc7ee1c288649b7ae927324140d740c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBKQU1372173.
Tons of Moondust - The Urban District Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219a499029147aa7cf8d7b2b20a789abb53ba5f62c01cb6ca4609221a1db882c. 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/US83Z2216341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0356d4f848cdd248655b79c00afb4af906e9ff4d3928b94b17125638e147b488. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US83Z1513221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2dad3ee1234685b76a4549b138b3361fffa54998e082a5cebb5ccce734ce69. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/HRA561103004.
Parallèles : Eclosion (The Remixes Part 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614d657a8f84fe99e6bbe40ec719be4c04fc440faa81e1fd31e9e16a6210e610. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FR3KP1000710.