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 0xf1d14abb61d36963173929acedbc4e784aeb2d830a163943d8fd797fedcbe164. 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/cf474bb5-0299-45a9-984f-2f2d19ad4202.json and https://artists.proofprofile.net/proofs/artist/cf474bb5-0299-45a9-984f-2f2d19ad4202.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 0xfa3974061e382aeef500fb8951430ed180169a7e6f7b9cf7b1a4aba173fd03b9. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:18:45Z), 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/USHM81745365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb981fd05861cd54f47ab7de8ebc1c6758c06615e07c27f40401152ad58e24357. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZFZ62328671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d2251a232a7cdd1fb1b03b683dd0adae0b416f1b5bbe321c9dda0938d8d89b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZFZ62328676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89411bc78e4a472c7003c678f61934a99e89bc401891c21134c55b575cccf8c4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:25Z), 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/QZLBC2405236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472bc234654bf5b9ac3bb5c71fb22f67b86112c29b8089f0c9cd0e36363c9995. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZLBC2405447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9658952dc6a63d79c8a8a56023abac25e536f264fda8280267002230bb3d259d. 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/QZLBC2407610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa530cb222bb966d2bba27797ccb35afb3266c453d1e1f2f045a179d04df0b7e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZLBC2412035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a5c77d447b315fc5438f7cd8ba33b7411c8279405d956e62032ebe1502565e. 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/QZLBC2418939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf491e5551295869fbd3b70cab1e29a592394e1c76620b40f7231bff80278d993. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZLBC2426021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89a26f13ad9ed940eba7f304a4c571f1ddd2e8cf85644d770f4d398a46ae56c. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZLBC2426037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3a012479eb443dcaca754132673440090b791b76d5437b6e4bcda403d9ecd7. 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/QZLBC2432870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c44434dd86d489e17b171fe38e2f63da968c369b0d77653b987a7c9646f3942. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZLBC2426019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf491e5551295869fbd3b70cab1e29a592394e1c76620b40f7231bff80278d993. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZLBC2426021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2f4f5108b60b8cec9f5119a23f8956be2a62e46e358540629b64da3cf4bf01. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZLBC2429294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b88d543eea358973338497338666fdb13c0da3dcb14df60ef516961ed8954bf. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:42Z), 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/QZLBC2429297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3a012479eb443dcaca754132673440090b791b76d5437b6e4bcda403d9ecd7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZLBC2432870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54ce26f08fdee59f68d7d3d4509543a801782de6f1205ee8068b9a1bc81bbcd. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:14Z), 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/QZLBC2500470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645118a1f9eb7529ce822273b39b3ce9b9e532e9b2d3e99b296b0fc3edd6f82b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:02:06Z), 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/QZLBC2500659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41431e217085ce0aebb5a5c0bd128d37e5f0d79b7107a5aa772a0074dfee25bf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZLBC2500660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49513fc098693d7c1493ca0446d12e74544c2a3fbbbeb2a4dda510c0a7b2d0a8. 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/QZLBC2505251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3552135b9c792027606a51290ec5019a2dab3b5958f64b26b561833dfa26ea42. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZLBC2507584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dbc69d102db84dd6f9ffe6a7c984f8d2fb7c55413dda7b1944550f0636da76. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:54:04Z), 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/QZLBC2510238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff90397b50dae21df9e4c55c131dfba106369b03f1838a5f1121978da0f9f7c. 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/MYATP0900224.
Block 2 Block (feat. Sadat X, Akil the MC & Freestyle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe4c30c22ef73a0b136cc0d01bfa14e209f929d69ed3c31aa2f5710e5e0e7ca. 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/US6881000564.
Live From The End of The World, Vol. 1 (Demos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dce512ca51e7bfcd54b8400e1e49b7c723a8dfc230af473b9ef3f255306be30. 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/QZPEW2268941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3c14a273854f5f8934d2af87de4c1423fb51045555f030410911f39f389592. 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/QMBZ91328232.
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
Live From The End Of The World (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b0e84366c4f9c7a3453087716eef29334afc2ce1f568b39d2521ead7710b01. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USHKR0922909.