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 0xa57b2ea70d303151d073e033551aaf2d4e2e18be0afd0cfbf4bf890c7fa1548d. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21dac06d-f07a-415f-a5e0-4a0cb89c9c1c.json and https://artists.proofprofile.net/proofs/artist/21dac06d-f07a-415f-a5e0-4a0cb89c9c1c.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 0x1a85ccccf31eaee4257714a1128779fb4efa776c1b8a2bb96c0f5f2401a1c4e0. 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/AUXN22148401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee17ba2cefe244b212b2b287cc336beb8868e9b257761538026aae3377393bc. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/AUXN22148407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccbf5bb43cbef785b97dc08e9ba01a2b44cd91d160f4f6ae89477cdb86608dc. 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/AUXN22271832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860bd1032c8dde2bb85b6aa74466aae67a220e087fb91e3787175c758afc253d. 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/AUXN22271830.
Everybody Know Now (Modern Citizens Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9312915ab61fe73eb0cfe31801d13d7bd62bd4a9e25503b913193f24d96649e6. 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/DEN061800780.
Glad You Came - Modern Citizens Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40114334c2a73af3346388cbcab23981a8fcdde30da514872b137d7119867c2. 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/DEN061800781.
Souls - Angelo Ferreri 'Groove Re-Touch' Mix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70550cb7d7c15907a991b6135f3833b0eb2397ee724325cd57aa20990bc5e217. 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/GBKQU2335206.
One Dollar - Angelo Ferreri 'Groove Re-Touch' Mix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfaaaccb04a89d8e8d4c59a8c30de16696b69fb287b30b6399d99a1ab1757e6. 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/GBKQU2335207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40795cbd1a39798c05f36bbfdcda336ebad9bb4e629802ef398754a276d5e7e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBKQU2240821.
Jackin Harmony - Add Vocal Cut Mix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ec8b47f847e439180c454ccaaf559e9cc44914ae8af3f404c34a4bd3b959a6. 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/GBKQU2335208.
Ride With Me - Angelo Ferreri 'HouseCool' Remix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d2854cbaae456c634b86f43af48d757ab5d74a3dbeb7f7ab7ab5251c099e38. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBKQU2335209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c127cc8aef45f40c5865c17386d36f306e0956e557ba021954288dd799015c. 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/GBKQU2335210.
Push The Tempo - Angelo Ferreri Remix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b449e258c2d8d3790bab81cd61e31ec71dcc0d8e9a1dd06adb708b3c0c789f3. 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/GBKQU2335211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180650b27e146f13d9bb26e9c017d16539a7be584ff0f1788dd6a1ff7d1312b3. 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/GBKQU2335212.
Back To The Basics - Angelo Ferreri 'Groove Insane' Remix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bc341d655cd0e3738b3a5a0f5d457ce4394d5613cf1c95b984f551b9fbfa75. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBKQU2335213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef70c978646217fdbad9aa5e7a5a0d3c131440a089ff14397864b4facc6c55e1. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GBKQU2335214.
Get The Funk - Angelo Ferreri Remix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa125201758de8404f6b0384b7068634fe554bd3a6986c9203f49cb622477277. 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/GBKQU2335215.
Izinque - Spaghetti 'Unreleased' Mix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f242e5b1e2d61f7cc14129233d84e661890c52297108c4601043347640ad54. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/GBKQU2335216.
Running Out - Angelo Ferreri 'Glitter' Mix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4bfe6d232071da0951acb214fc8b6b2cfa1693a28e29956566471fb0c69743. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBKQU2213166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b91fdbbd062efecf4dc7503471a22c5e19e286cdca6c28cfa5f3c96ea29c8b. 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/GBKQU2301446.
Deep Feeling - Original Re-Touched Mix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7a5b1aaecd2891b34f9172a787d4215f2144244db8304016f23a3f98a94bb3. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBKQU2335221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b93a6cf5bb80e53b2f75dafdcec48641e05cdd90e3598f5ba227c20137ddf2e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBKQU2335222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3528c65e4a68262ba3c67c4f99fe1b3bb02a05c3f5170862c30a04bd1bcaa74. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEN061800824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8382c7c3744e1f68c628bcabc9512cde6cbfed6ce14ec19103a9ccb6d4f3a226. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEN061800825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8567fb05965ba0ad14b2415389094a8a3cb4dda57d462c7b24dafbba5f94b108. 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/DEN061800827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b0b4df4ae09b4671b3b36e6060c6cc99f40c29d3abd2f9876655c9abf70600. 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/DEN061800828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ddadbdb41abe35d1b3a21e7846e0e552602562b5dcde6a2082f1dad1a3d83f. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEN061800829.
Glad You Came - Modern Citizens Remix [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711348f2e058106ba3ef6e8c4f252d69ad67131fa93ead0ab8378d2f388f0140. 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/DEN061800831.
Blah Blah Blah - TRU Concept Remix [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e64b2d574b29d925d202d69d5640da1fade6004ce3461d12d2926b63301dd7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEN061800832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf281e0df536d15105442dfe78bfad6dd9b937792c8da22d2704a8f30d17a80da. 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/AUNV01900259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3e9dd0c4b7d88f50c439c670990e58abf3a14e6473daa3a2553f62b481223f. 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/AUVC01701410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6285ac249b4f95ac66888668200acc5539a28e130dbb8668b56989136e5c1d1. 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/USCGJ1887290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a8139c4adcb06f65723a0c508c79a00110f17951e36f48ba8f4f85cf4791b8. 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/AUXN21905989.
How Do I Love You - Luca Cazal And S L F Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eefd43e8f0687bfa0f145380baf598ba19dd9a7ea0ec43e3515ceb8c167c747. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/NLF711907448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6374e39ddc478bc496d3520c76c44dd351b09e166918fcd02bb8cb285571116a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/AUVC01802621.
Trapped in the Music - Holmes John Techy Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf689b4df722a3944c5a8114e1179fa0aafd1e1847de6e25ae57513e83a4b22. 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/AUXN21739794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613181fd0db3ddeb4404ac66d12be192a1fdcf00553eea58d7a6184fa1677ba8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/AUNV01800252.
Double-Up Records Amsterdam 2017 ADE Sampler
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011d71b0be8d4b1db98a85a4f79c3164a00a8f4a2639f27a95dcd04f048e8d24. 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/AUCN31900046.