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 0x4f0faee8b07fb181420aee65e50d4c61eb34f545169cb86a49bfc61d210a65cf. 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/c40a254f-d91e-4889-8fea-e2372b300662.json and https://artists.proofprofile.net/proofs/artist/c40a254f-d91e-4889-8fea-e2372b300662.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 0x9d4f33a0823dc9474d0a25fde2564cc54175854753d4a2d02a017dd0d243d49e. 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/USMC17147484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d85e29dd341da8690fb5b19c88619b97dcc857edbc7cac41d190506396c1dd. 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/USMC17149168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd2c1d8f54aa1c6ca10081780a6fc80d8abbc65c7cf5a5a5457581dc66867bf. 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/USUM70502882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4843e7535750b2ddbb1db5aa6eb814feb05dd2f893547d697dfb5f445e60b3bf. 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/USUM70502883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda42c48246d1d1cc16b6a9fe79977b0fa9e51b9b3c05e85d50f7fc86e9f6462f. 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/USUM70502884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21de07f5ff8da3dad69d07e12d5165f12f36e6d90dd0b3553f3fc0d915d6da5f. 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/USUM70502885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22d3ac609e5ce6afe85d4bd2c9ab4013930b4bbb941f3b6d55cc9e7d189cf97. 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/USUM70502886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac143751aced2b78e849ce54a53ef4d61cee465ae73316982336a5ccc07347c3. 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/USUM70502887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb835c78f281224c9176f846102d53d6e328a76f61ffee510185833ecf59fcd. 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/USUM70502888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b976c7f90e0af1eb3dc93bd05a13242f2535221811af331114d6534e87fff7. 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/USUM70502889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea0dc86e5e895d2e78b6d5945a61ce6380d9b5c59e21a4e445088dca36c37fd. 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/USUM70502890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437ce6ab3564995a5c7d3e7d542801877cf4876ee0cbf1d6b5f212d6b11ebbc3. 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/USUM70502891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ed3a49f4650b7905fd6f2d9683e21e3f76b7cdc447d947452ef58cea3479de. 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/USUM70502892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b868ac39c3f26ca77fbba61f85d17a765ce1cd9548542be8d233b546a64e484. 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/USUM70502893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e4e6d93437604b4c26204993b813895735da5a254d146daba67cf7acb872d5. 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/USMC19858274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb079423c94dd5eeb4d7d4b0606545d3994aba8cafe243e0389ce496424279761. 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/USMC19858275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2958fb435c29c7f2db6914e5b560c7e0a336700522a2f59bd0c22f0b3dca70. 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/USMC19858276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dbb748520518b20f40ed443f0dc2c85c3d7220e169aead1ab01949edd968e7. 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/USUM19858277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba2cf97725dc5a4fb53649674fb07b6e883900a2ffae68f73280e9e059e8935. 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/USMC19858278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3e64377dfb323775845f49bfe8f5e7f2f6b5be09758bd9f683301ddff7297c. 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/USMC19858279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea4aac1f4dc2614479ed05e31a5d7988166c6d41fe92333965cf73ad1b59e11. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USMC19858280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6fee154f0270a8dd77f6b42afcc13a88daaf40b5f87e724b70c5f22ef76340. 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/USMC19858281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67803a2373dfe5ab1b95553c0515b2b867157065f511b8ba0b93ae307f344725. 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/USMC19858282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6b9dbaeb9d04175cef264f9492b68f40c09e08d181407335874b3ec85b20ae. 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/USMC19858283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759565e6a4753e503097aab2001dd259e611b20b5322f10f2919e2a1c73176ab. 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/USMC19858284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa312bbe8dbed8de9010287f863271e685ed3d5be6a9a3862acfad46a4c52cf. 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/USMC19858285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666f2164605b00c3b8a53960989bab7caa8d73135279e36858c8e00db6ddc1be. 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/USMC19858286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6fa6dd955f5793f053c2c44245c1cf4c8275089df379cc77b582bf54b0cba2. 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/USMC19858287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c907b9db0b06991a0f7d68fb5f659789e7705059f9cd8e1042f8d49f7b49f43. 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/USMC19858288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2b6cf5ce4207aa3d32f64a0d85e191cbd3e86a4ae1abf3ed4c2684d50f7d40. 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/GBAAN8890012.
Stay Around A Little Longer (feat. B.B. King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3679cfa7942e89a47d4476dc738ca75b5d18d3303249fc221060c5b28c3a9021. 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/USJI11000189.
Let the Good Times Roll (with B.B. King)
Playin' With My Friends: Bennett Sings The Blues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2955f4de617dbcc66615391d51615854838298fdbc281c83028e4885ade68a. 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/USSM10109524.