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 0xa9f6e2f5e51641eac71e279db8a6e3d667a0cb495945ebb84747dfc2cee5b269. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65b5db76-76b7-4577-a5a8-c917eaa99ca8.json and https://artists.proofprofile.net/proofs/artist/65b5db76-76b7-4577-a5a8-c917eaa99ca8.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 0xaefacc63c4bbc7b864faadcb214b40d8cac8c4b8ad546f8bd790888e0e4ed4eb. 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/DGA072102634.
Run and Go Hide - Roots Zombie & Gary Clunk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f5616fb555629b5c8e98f796babdfa60822b44a6e00699445fc06310053b09. 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/DGA072102636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cc0cbbff6ce0437a3a3ab259b16aef754023b1807077aae726e84e39809db4. 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/DGA072102642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2d3866ef5c1eb454ccdb00927fdcd899f76dcc6d2b17ee280c9451469b5ad2. 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/DGA072102643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab4d2333a5ac2b8d57c14ea83bf2c7651d62708ad4e183f6d70088c864068de. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DERX62000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8d19987701592a1a88ebd5d8d8df978e77570a3b3699b7f7eb83b23bb8e102. 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/DERX62000604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07aebc3342cb014a5529a54ede9281fd727b8c280c74fec915dde0dc54c18f7e. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DERX62000602.
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 0x369d01a7db81f963f34bfe2e68afdc697ea3f1743c63d07edfc2780857047325. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DERX61600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b68769659a8ca53516fc3f2d4468140ecdfc6cdd8c7a33e11202163cb3fb29. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DERX61600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315f77b65c2788843256fa78554046348904509e53f4b717292945d90148e475. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DERX61600104.
Anti Bass Neighbourhood - Full Dub Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e1a00a35a3f9aafb046052b5da98bb9087c5053b65d784ae609e19745f3549. 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/FRX201935287.
So Good so Far - Massive Dub Corporation Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee13b54800afc633b8fe8bc0c07fcaa07cef7c23f7573dfe7c099dc81d96942. 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/FRX201935288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e248e89a191619915d01175fb340163e6a1946e885a6195a6c1bcd54c58adc5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX201935289.
Transit x Airport Light - Panda Dub Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f48e3f7858e1911de1905a1f8e3dd3216d6c467bbcbbc2952893b26c20156d2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX201935291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b948e4434d29a04680e4ce9248e45107996a5fe5b7c334245f4ccf11253a55a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRX201935292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd413a1601c7f1a61ee0c7e51f4f58c97ba5ff7c95119f268cc95f96beb89362. 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/FRX201935294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318bcb7ef31faa9448f51309a409e19eaa1ba5a5b1c9160f5b9f60700f4a08d8. 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/FRX201935295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd044b709d468e9398d4d6288f4fe3ca1f62062030546975b82c93cbdd45ab6c7. 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/FRX201935296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8047242f88c4e35850835a91c8a93cfaab635716df2054b07196e4051b1fe6e6. 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/FRX201935297.
Anti Bass Neighbourhood - The Subvivors Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2233e3dca609392ee6d845ed6ea899c4532f9e400edd080a8041185201626df3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX201935298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742fff7686be3c418e59cfcb67b60b22b7937389b7f1f8fab23168b81c31cc63. 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/FRX201935299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b5b517726decb0ad570be314512992c191091a400855de4ad3c935f9693d1e. 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/FRX201857723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0028d8006ed1b7d83c0ce43a361f6f1f8dd9b1c1b7215bf39c652d9aa1aec06. 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/FRX201857727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe649bc0ce9bc2bd638906a057d529494c2bcc9b6e0b3ad688d6c4d4aac313f6d. 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/FRX201857732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfacdee6d7a25c553a6954ad681dfdceb86b4ccdef1299b04face6ae99058489. 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/FRX201857733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75753b988ad53a08a37f476935916665f2a44919a0b07f803ad1d46798497e5d. 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/FRX201857734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212c9f1c66ab6b7cc84c2c581e9f8be9f6f8a6631c2411d7db41212731f46fc8. 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/FRX201857735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0058319a63f67bd054c5a76562c46a8b3c0b422dbdad99a4a998922fad68c8ca. 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/FRX201857731.