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 0xa9ae405cc745a7b87a1debbb0fcef06e7ab82f7ca474fb3c9d4b3b32aa497938. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ccb19f5-9493-4cc6-8acb-56dd45b8bdb1.json and https://artists.proofprofile.net/proofs/artist/7ccb19f5-9493-4cc6-8acb-56dd45b8bdb1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You Know What I Need - Harvey Sutherland Remix
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 0x6eddb0a83b380a50449fb7be7f6411c953976382975a8c201c9ce8a48652eb25. 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/AUNV02300018.
You Know What I Need - Shadow Child Classic Vocal Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42306dfc12d1f9bfc1186cc92036f53cc76e1da79226e37dbff4a208ef32ab0. 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/AUNV02300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3042804c1e00d9905fbc87a7296c29a498f934c000635c0d35416cced7675dfb. 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/DGA0L2384239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1220f4a50e23ca76bd25a61990bfddbf60432e669cadd0a26058dbfc6483f9. 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/AUXN22476251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c469d5ef538b3a6a2fe6d84e5b967945f6f3b2ac85b05cc8ceca28930b7f3e0. 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/FR2X42488650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e25482cad5ae99c6cb8978d8bdc32287670b4466a0dd42ceafcd3a7e3c403f7. 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/FR2X42488652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e04ca5b5a303a290abf6b2638935911a26c2361bfca2238062077c60b87bd28. 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/NLZ542400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1446a65340cfeca1e11a1457de1de2cda66f0888a9d07d12e578d4d25347f2a. 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/NLZ542400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf876f827760c18021bd700459ee02fd9ac17b3ad3b39eac40ba6734aba876410. 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/AUXN22383207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff56dfff27e64dd4f7e5b6eebed6cc61de52e4c6906049b16b2907e19e1d3cc. 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/AUXN22383208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06912b38d8cd11b45689ebe47b73393b28c01bd57e44710f9d90448bc2c59660. 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/AUXN22261679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2372c7b8105e9b85426a91600b6755fa7902e7c35933af8c75cf84daf217acf. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:06:07Z), 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/AUXN22261660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf218ad9b63d06e399d4f7141a1cb31f77ce624e40e133089fb6f7fc0aa76af22. 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/FRS182158356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xababd0c30d7d3f47968d4db0362ec31d034749f98f3374a402e30a1f54ae52fc. 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/ES94G2119203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02b3ff9caa4af95f903bbdfebe4f11bd58a828e0389e2973ea87cf3ebc68cb3. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/AUNV02000180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b596321c2dd375b11ffcfe9685e5eb56e6f9bf949db8e9b4ca816ed68e79dd. 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/GBK6Y2410401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8bd6befa0223e6450aaa559451db7a29e86b78f1d11bd5d71d0c3f29e4336b. 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/GX53U2009224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c055efa35fbc52678412d40eb7b9c2a8ae88a99c76202a24c94bd45c360682. 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/QM6N22409198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4251153ef6cfea7bc816441f0ada54493b19727bbb9a80610280b06e9de7989. 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/QM6N22409200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44b3aadae36ebfc48aa4d945e84fee6ac7d29407660fe08b68c9f001844af51. 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/QM6N22409201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d897df681b894e1bd98f4f4636e81c9af38ae925bab5fd4c565c132b2fcfb48. 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/QZA742309515.