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 0x6d4f6a70c2570ad56191748565336a42bd5b7d740b8041a5216eaa5c8152f3d6. 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/03bb2960-f4a2-4fe1-8ddc-7a5b4f6d675d.json and https://artists.proofprofile.net/proofs/artist/03bb2960-f4a2-4fe1-8ddc-7a5b4f6d675d.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 0x857edcf2baefc285e5012ebafafc9812f4b9cba19eb43a804bb558bb098d061a. 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/QZHN81953827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e94e44279be0814a023cec941e052d69385b145199aedfa829bd276062e69de. 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/QZHN81953833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64aba0d3ae492a900bc58fff440d7986db46aad04d5ad1747a6b5625dbfda09. 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/QM4DW1897118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7349f06889e457e4601b74e0ed255e7fa0b85d62c42c3c0acce811bff8ccf0. 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/QM4DW1897119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94a6b7eaa70678a725773009453cc33a405344adcd2f4e130875bb9483c33ee. 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/QM4DW1897120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e67ffd06fdf0bd8f534193442e0c5556f3a183fddb00ace82bf88874a5fede. 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/QM4DW1897123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dab4c5d1bd2fceed4a2aded569d9f4e830f70724d53fd8b63545245ac39e29. 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/QM4DW1897125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc810b6fd26a2c20a38b30878d3f3c1a72da7b5e3fc649346d0abc0654f2ced5f. 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/QM4DW1897221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f91d124ca4c8a7b6651c175be6226ff62bda27e3a26fd8d7a9ff10b34d18bc9. 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/QM4DW1897320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dfc6c6b802608da8c5480c112adf6f1894e243d59291bacb5d7cd0d2996a62. 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/QM4DW1897328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b11fb1fcf0b543b54ec887901b544993eac092e365ac4963f0d058d971acc2. 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/QM4DW1897332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b82e39a9bf8714de9859c2f3a920fd9f1294a2714c4171b302bf6f0c638296. 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/QM4DW1895294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357344244c706452c15d974e88a99d32ec8b588832e78932af5a391487c4c36c. 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/QM4DW1895296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7551f29fd71c9bef01ade2fde9579e329f919098f9cfddaf5951933c69cf958. 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/QM4DW1895299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae31a1e0c9790b5c8be65b908234b72f98c77571ca5e407b42727587bdc2b153. 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/QM4DW1895300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d34a28f46c87c2beba7c931bb0daeacad7d4c2053c9d623c5bccc7731bf0e4. 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/QM4DW1895301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b448a3cc1b15e3b018f0f1d4ee16e583f80da94f50aaf045f2718114c1fab51. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM4DW1895302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b0cd860ad949c320e032de1c6d65b47c6f4174db6f51444c21f33cbcf8f49e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM4DW1895303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab6fac258b3c61b82b28de613981c8e0922ebbe4f35afb82bdc994f8a9db3c0. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:17:51Z), 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/QM4DW1895306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c99b1a4e2d279d5421d255e6fad6ab19e64ca22a895f51963074024cff239b. 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/QM4DW1897374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee00d63a6dde45254b1471f242a8f57756b58b241aed4d1371042aeaaf22a639. 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/QM4DW1897375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9421ff2e897cecffd481c41bbaefaac13494eb72f35b7619fb8e54c53ec775b4. 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/QM4DW1897377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ef67b51d83bf69f8f0c3cec37bcbe04c00fbc5f6c3261470246762b9e40573. 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/QM4DW1897378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7ff774cce23043ca22690a289cf7c857da5efe8fdcf670a05333fff9b39824. 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/QM4DW1897379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcac0df3839ee6a1db2a5ff18cbd593e5493b1348122c90781a003aac96e3c6. 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/QM4DW1897452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78f50015de92338f4168a023b45db588a06a42cf973a13f1b7db2ae13812ea0. 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/QM4DW1897454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155c939627853aacf9d4f37489ea6a00d7544ab21682f06a0dde2500eead8f55. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM4DW1897455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9c1af121a09dc14ea1dc98adb0e9907b3a2d96906ebdf93a96cfbf45a5397e. 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/QM4DW1897456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f4182020c3bbfc37c672fb49f7482c04edcf471dbdc51e6afd5842c26cf11a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:07:54Z), 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/QM4DW1897457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8a8cc6dde084978ed7a5029fef976189301f7c4d7332cd629d08eeba0f42a6. 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/QM4DW1897458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfde895d3b825c1304e2c05f11753f173cc27560b9e45ed9d2eee5555a2a96ea. 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/QM4DW1897459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e5e26fe6cd4d0e9e58e7f5d5d6db6a94bf23c3e09dfb75c8dd3eb6ec4a854c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QM4DW1897462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbaa4d5618be0156fef113776d8ecc5db1f94ddc4ef3b4a05fa518788817794. 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/QM4DW1897466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fde66a3e8240b4d62590d62a50996bee43e481e7d599acd1170619aece39e6b. 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/QM4DW1897467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf204f56d24bf34699ee05257d522d46b7a942cd5fef1cbd734dfc0395bb2b9c. 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/QZES72593108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23878e07e59b82003460c787e8c5b7965f8f3988de214f661a6b90c0238981cb. 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/QZTBF2448538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a645d3e4f82d021453647033713994c4f0cb3144d2c6da44cca01f7c303da59. 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/QZES82434231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ace5ce27fa0b68753535485ad1dbaa5d8c14c57b46173c40680f7a1cc4c60a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:03:29Z), 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/QZES62308614.
Copilul Rebel (Adrian Saguna x Ciprian Lemnaru Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84222cc336c9c639bde6b9b7ad5a402e560ac0955a0dba3349c45d6be1d498bc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:28:18Z), 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/QZFYZ2067828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7aee14d9aa24547a52d1412e5a981881ca5dc582af2a2c5f9882f5b388b218. 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/QM4DW1898386.