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 0x8203ff72426e32598240b75d5747b1196b302ad716080616fe13fee8512120de. 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/d6a31509-3143-4fe4-bb0c-9548a4ffce02.json and https://artists.proofprofile.net/proofs/artist/d6a31509-3143-4fe4-bb0c-9548a4ffce02.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 0x3c25432505b47e4f1ff3fa0489c2bda3169aefe3c88f326879c47ad708dc5fc2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/UKACT2030070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07610dc074d0def90106c73dd89e7c334fa5b16e2b7f9058d1e08780218adbe0. 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/UKACT2030072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68aa35d39ce4ee574e3027eb72a2ab075106568c078d8a5416258870c9c66a9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UKACT2030073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4fcea5e0349c3d1023f962bd7a467d162f0204e7eeedc9d9100e1ebcb4e7fd. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:45:03Z), 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/UKACT2030076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd456baff0ab8df3b29483a59760f4a04309b98c5e8545113a5b646b723f82145. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:28:40Z), 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/GBLV62010516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd9ea8ecb491d4174d7b6d1e4afa79ce631b3fa35291092748516bb65f6ad17. 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/CAGOO2211268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729c94ac75a41ceb0f6147f6a99ed8c8df4e84677186f704fd08bdc5be80e2e7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:09:07Z), 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/CAGOO2211269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde923ffdf381c0c8bb77d0ce354f132dcc800170dbacd7924d19552e107f0126. 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/CAGOO2211267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3516f9695040f970b91dc098dd2658f0af8ac13dac4e50c03f73bbb038ce3d0. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:55Z), 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/DEY472374050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536965378140a80ab46e8063d123f859179a538bf36840354e9f91fdf3069d81. 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/DEY472374055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0468c2c54c1b555473901f2676e64d61861097f03c742814fa33d8633bf4fd7c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DEY472379846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dae6bc93c31ff8e15c12726054dfd712e7ea67f6adcd80ea4e31015b9ad079. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:40:35Z), 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/DEY472575897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867d134aa7ac28651303e0c7d03a5bf0e891963482812401d035c7b090d4c991. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEY472575896.
Café del Mar Ibiza Chillout Mix I (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7413dae3ca2c6830d303343c7819b991fea5ca85cd5edf8a573de04d4a4d82f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES8742301012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb395dab442bcb04151bccc5ef7d0fbb3cde6dc695725182dc6ce3b154b98eeb4. 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/GBJPB1600648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cc8a90104f22a59b770d001fc782d5c894967086fae913c6b4f39c89a7a839. 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/GB2DZ2320006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4886a960d666647ee2d432706a4e24a2e4e7e33f2d4aa62488ce2bce2a4d37ce. 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/DEG931901633.
Café del Mar Ibiza Chillout Mix II (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad67a7ccd81f3b92d5daf70f338d7fd5256d1c1846384377e0f716c5de47bb2f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES8742302012.
From the Delicate Mist of Morning - Huerta Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bb58585b4adb48a0811d3daee296b6a704dd31faf37561c11136484a81e538. 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/QMDA62307831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16eb6b65d89feb10ce9bf395897170523f77e9a6ff37b63f7d4462181be2f9d. 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/FR59R1875997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd801ad9505456f6aa444334c22a7a7ddf9f547412ac9c4401e9039c0b599c2bb. 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/FR59R1875998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a83df849291136d3d4e87a3ca5157d8388faa6eb27282b67e709190fcd4aae9. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:59Z), 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/US9KH1900002.
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 0x4bfe7d1e9899eadbdcb8f3cb4e027ada3b80a9844621989be7e0d3a009dd2d99. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:19Z), 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/QZDA42110314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8470351dcb1b45557379882818c9e45d1e3a7a46014727728fd8c9ba5a0dc0. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DECY52301145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477554fb1232ad84360d901e1efbcb5fe89ee9f7866095bd9f21f1e6c9cebfc6. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/UKWNJ2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93a04a807a5e859abe953023cc058f0522704d1c28525167e4edbb20b297bfe. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/UKACT2030074.