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 0x07450e130a7edf387b427aeab0f64bcd93fe5950fd00e7f98964f5e9620941c8. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7f0176c-34fd-4d28-8692-128fe07945a9.json and https://artists.proofprofile.net/proofs/artist/e7f0176c-34fd-4d28-8692-128fe07945a9.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 0xcdeb9b667e7a4d128e07d8998478d0f920b7dfbb0b6cbe726ec982360cc1cdfc. 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/GBLV62108917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee33c6e824a584b7f4975f4377add3ab8e4cdc761d8c8bec3348e0f01f93b147. 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/US83Z2005786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56703968690f37b11b85c47545915834f869f8053b97428df62081cc617b082. 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/US83Z2005780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ccf34d679fa747499751a83cd12863ffeafdf3c734cad1245420809524a9ec. 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/GBKQU2266177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6c3facfbf79e3044fa09efa7c1e41526531cbf2d612d378bf06b142a0a41b9. 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/QM24S2008762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3e489c7a5d71592bf81e8be48e6966f4dfbbc0f177aeaa7054614459e488a1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:01:39Z), 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/QM24S2008763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c9d858f71f49e18eb87df1822dc72398380ed32c1f24f1ba20d4b60ed04989. 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/QM24S2008764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ae4fd9435f9fecf7459278a5e9f11ae80ae4d353bc8d7d2741cd7a28c3a927. 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/QM24S2008765.
Armada Subjekt Miami Sessions (Mixed by Robosonic)
For The People (Mixed) - Sonny Fodera Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c3ce7536c93ef7b1c4d7545b4575bdf2d30f96ab93dcb152d338b71c5a1da5. 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/NLF712002428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206d03485a66c5acf7b31f9e0b800df68eeb58d5e31149934e411d8a83f98169. 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/NLF712001216.
For The People - Illyus & Barrientos Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ac910e7d328ab9db0637b234a6d5f87d92fa51f15e71fe38f48162839622d8. 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/NLF711910415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3795e1dd2bdc6c67f1e7ad2f1d08585b35855969f89943bd6d993ca116edcade. 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/QMVZM1320002.
Armada Radio 301 (Incl. AVIRA Guest Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514fe40f0e68fec8ad1d126bc99d026ded81e6cd1a9a023af54afb87d79d3fd1. 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/GBKQU1768685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf3df1b846c0b4d38ec0d5643875ba012578b36c3d225da87b8fce4fad2649e. 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/GBKQU1884075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f6595830cfea4f30cf8470da4a9cc3da0bdbb67dff6dec1710897bb0512a46. 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/GBKQU1859310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c9ac4ae07e60de96fa209135acfdab0fa2c38ddf2340c7f09c83167a9d8dfe. 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/GBKQU1859303.
Who's Afraid of Detroit? - Wyatt Marshall Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a171aad088d5cf5a108dbe973d1a643d4ca9cf5117c9b1614828fc0b16b761. 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/GBKQU1859308.