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 0xa81a22cef27b58e8843b164d3b786721eae16899e7cc65d74cada58a5e669e99. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55d21dbe-d195-474d-8a09-1949f5b5bdb8.json and https://artists.proofprofile.net/proofs/artist/55d21dbe-d195-474d-8a09-1949f5b5bdb8.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 0xa881d93a09b80d127399f3fbaabd9f93d0f6334e70683ff25d3c5b48607051ee. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCADI1737170.
Winning (feat. Sada Baby, Gt & Eastside Reup)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7319d98632344b9cc22572e557e12aae56778c0fa962187302c63932715d2dda. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCADI1737180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bd45fa18063a5c7c44beba576c75d442cfdce65df92272c386f0fecea745d3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADR1885585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e786f894b3da8508aaa452f9df0d10c7553618152c7a4e563566e24265b387. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZES71828045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51efeb9a59652dad86c3d73eac3ce831aa9bffc7170ba3f7afba07eec2f3b416. 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/QZDA41983368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11681c15d467db1ae6be6396475a12bec11f047cc9bc152399d83f1294e8a497. 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/QZDA41983373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2901161083edbcd8543aa298de90bf80acdf1823ff7a018094e6fce8b56af3c3. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZDA41983374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc855f4cb01446d8d933b63c50c6122517f2631db989e0278723f16f889fcb1cb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZFZ71907641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62da256161e39e4b01e498872ac03e8a064c2252d4d80ec1204223f62cadb95. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QZFZ71907650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe8da198bcda47466d2ed6060a8370136085fb39d732b215bc261fae9bb982a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNC1997550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85308adb245374d45569e137815a983d638529c83a3a73f4abee865dd2477c3. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZES82003530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807e26527025c011ac55b77cba822a3ee075f38321bfca820f659b23262b358c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZES82003531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90226e5946441d7626e2ea9125793e0ef703d75f40a2fb391dbef42b08da6273. 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/QZK6J2071711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b49085bc14d5ba1ad6dcbbd5f282b7d519fad30a95e3b905aeec24abab2f25. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZK6J2056036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010beb395c687cc6d83d3422f103fb31c9c96967d310214dfd2b6c4b1b6e1387. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZK6J2056037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8b101a69d2dbb626fd3ff54b110c11a843546efb37c3fdf5102381d148e4db. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZK6J2056039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32faa594aa11d0063d6961bc81d709a5799af0e8b5e60a3522919f91d17c5217. 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/QZES72135564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd324aa8dbe7f9f296f779cf06bece0889e1688d09a14dbf1969c6a5074a2c3cf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZES82258637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1870289c4510586b5fd0a2ed270723f9af65454ec6d494984ac160edc2d34e9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMER2222587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac134963cae478736a8e87d9329ede24636689b034371b1784b44e70adbb0c2c. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZMER2222589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09f15574107992e3243ebc7003a1378161e609ee8a6b75dcf0da16e699235a3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZMER2222590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c32533a5ef8209a5c601d6fd392180ed0a259ec0be056a9b641bc832d5ba32d. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/QZMER2222593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6ac8788bde8279b63029c3c3d23e46d4fbdc42bc8901870748acd8124950e6. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/QZPLS2275501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84900971f242e3fc6bcda1a7d63269aec34a3a0f7969d5ef1013387908e97420. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZPLS2275503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa1c23723d54b8b9f31988a33050d3e2466ba523ef1d0b73f058014daa5d0e7. 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/QZNWS2309912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e2acf1b2806d8c2dcead5f0bf6fb2806536e08eb54aad19518907401417f59. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZNWS2309913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3fa2af16a3e0867e249344c2b267b0e92f20aa1b5bbc152af4ce15438e76fd. 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/QZNWW2396954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb367e1829cdb02b7749cdedb5c1ae3cb72c2914310213f38022eb51cfad233. 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/QZNWV2410722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeb92117d227117550f8d5c86e45368d6e4461f305002103cd6207f522ed76f. 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/QZNWV2410723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07248f3c0f8c47280fc7eb68850bfea4aee756153c4f30410ac4816a46c3ab86. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWV2410724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65596e80f088bba0dc066020d62cf9e52ad3294371f7fcb52cba656b9331bad. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWV2410727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308c559f7216ec4c08fe643ade8b7df0ebc5c01c032a1487801b6ffc0dfbd9af. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZTBA2413905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab69b4c958343923b7aa4071359eb522682ed6d38fbda9411d9574c5544e7dbe. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBA2413906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1378effdeb26dcf77dd70959104799dd57621f335b7b53894c33a53937e9bfc. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZTBA2413907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb2f3389cc32c329e1c2d4c7e25b71fe6c3fc676b8516f08bdbd1ba0b69c45f. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZTBA2413908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ab9ce2ceaadfb75bd148e03c879ee2e09b9b0a1592a47669e8110112d7093a. 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/QZTBA2413909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbf4e4db79b4861302312a351ddcfce811176d722c0e3382aa544f7375a6330. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTBA2413910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa433b97fcc95008ca0415f6842a55708aa4d5ce36cc5140ca577da9e00f8e65. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZTLA2442474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5aad501d1face83bf0ed126163246631cf6108246d3e6a33c95855e4bb9d83. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/USUYG1380456.