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 0x7fb2a5ef9c2ea7a7f6baa53df72871fb28df34dd9edf9a7fabfb11b529f7988b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63e0321b-0f1a-461a-8870-276a96804423.json and https://artists.proofprofile.net/proofs/artist/63e0321b-0f1a-461a-8870-276a96804423.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 0xdf80d5d4aa4503d0c4d3e45cf00791ad4194d47aef7adfe2c662293e7c11b60e. 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/GBKQU2197396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a919ce81a2c9f80ff69c495ef2c6ef487fee1677a7db10fbd778d8a3e9af2d. 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/GBLV62022322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9739b0c24343e59bcb74e371d6323ea536dce747fe07a81dc613db0733e202f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP1911075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abd6ac9f7bff0f23d136edc6da7a19315ad4ef0b49d58cc39dc08a4c1fbb155. 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/GBKQU2244794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c12b8b6c0f29b22657685062bcec163e53edf16eb65d3752f14c08f7ad31706. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2193908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f09f9c0b406ad7863d8c6e0b5d11ad8aa2076ce92fc16f8b0de2f2173458a86. 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/DEG932402022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59520195e5fb347935877bfa1bc2db238cf7517b6b6ec9569b13b2938b67974. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DEG932402020.
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 0x78cb6ac5583b19bbe877545b93171ef858b086d14365452b6b457a1044ffd45a. 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/UKU932480131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913347eec367e46133815281dc23777c81a52aa8d2a2ac1cbdde4069c0be5436. 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/GBKQU2396587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a9862e0a4d585cfb70266b4da1847ebe9f9665f8f7f135971eacbdfe3dd2ec. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/GBKQU2374529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce14d84a7e5978fd42fe50ca66654af749b754a8e092f31a2cc548a6a944e0b. 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/CA5KR2366247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5231c386b414c0947c6b5410aef1a2b8c88c0d67c5ce62193806916f8abd0136. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUMNW1800341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf752e6ce7a96fd81d4d37ead5d43f78202dce2a1a2dd8dc8c92e1d66a5fc29f. 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/GBKQU2277849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030c8bdf38878631b590593953adf181904ce1e630593df5994ffd0eb7e00fc5. 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/DEY472275571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039d736a5e16cee0a9522f6e0e6186a11914d22fd7be6b2383942795e4d0d8d6. 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/DEG932102922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9cd608e370179d990cf3ef7967f64ba610b25e974f8469b56578bec8cd9383. 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/GBRKQ2115456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415e2326e9288c9677918e02829d7f0f551e261d9c354f0a55ef8c827a5fbd12. 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/GBKQU2027856.
Toolroom Radio EP702 - Presented by Crusy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d6ae01b6d12935c3b3e40d07a4d11b99ba6b2ac0775a242de0d707f75bce31. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2367829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e87a78fd086201ba1e2c922a4a1eca47e2e89121c9264d56fc47b076dab480. 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/DECY52001458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059eb7bc1fab35c3ede7290e26f19ce0c55a55b6af3e7ac45fc3181657d70a1c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DECY52001464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2fb1e456b3ead1acac5bd0a805db21cbbb2d58cdc01564946b2c0c0a6b9107. 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/DECY52001466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5fd1c744976912677903af124988397686b6c6e5301b373fd6ae6206285085. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2163487.
Make the World Go Round - Ryan Blyth Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897cd83f0ea03087e792f6023dcdeb4e46efe2ad404ad4cb6029dfdc1c330f5e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEW872008511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7ae5a7d3adc31c9722e40a26838c08562c275947344771fdb3e167bd83593b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEW872101906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51f9d2c5f70d2636abe3c58bc87e7966c3d8818e94d01da9780af5fbe96a218. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2259948.