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 0xe08699c1becc9b994ecf07e5c8be7c5f79c63380668248f38e2afbdd8d5c4eeb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a72ed257-2577-49c5-b8d7-cfb9b00c476b.json and https://artists.proofprofile.net/proofs/artist/a72ed257-2577-49c5-b8d7-cfb9b00c476b.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 0x7d6e0e64577e4a17f9ec8a69e4f0bb904268e2f349c92203824466b866071e13. 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/FRX872054846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973e780709a2620437907740d760b4f806e5fe46e29177c812fd7baac055b543. 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/FR10S2319814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98d75c82ef679a471c646c185c4a4e7eb37e7bff3fa88f96d3febd1b2d8bd0a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA062294702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9196700d817f5cddf57860c2becb5c0e203fc8a3cb38fa27f9c63d5e8e6e81e5. 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/FR10S2319815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ded5cfd7487547c260709f3cc25324d1d2ffb426095087bcd5d7423e553fc9. 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/FR10S2319816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dfb398c835da90b52cf10a865add7fe7d40b1853f9f70783e45ac80d6a5133. 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/FR10S2319817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c493b5c837cfbfc4d46457b92b20774ec8b2b1a8d1364d1a381bd0963a04d89. 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/FR10S2319818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e735f421ebf318f95e6323a6c000754eff21040c5d8da8a42a627e777bfb58a. 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/FRX201951091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de8d9a0ac51f9f1bf5ad201ce4bc46e77da170f48d25fc8f4d32e25b57f3400. 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/FR10S2319820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3d14e89333ee26497b0b9101e66ad01c436fe6c5f32a23debcfdff6187416f. 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/FRX202267449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdd91c0fb32976e169922a344089174c62f3fa1ab1a6b96c5c5a74bdf21036f. 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/FR10S2319821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cd2ce790ee0d3092256bac4ab1c852ec54772ab636e22f903263405fe397aa. 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/FR10S2319823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76611d190e461f5a62b8fc0a90725427aa07243381c2956422b1b9dc59ce4bf3. 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/FR10S2319824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c8bf382a5696ddc56454a95496f833ab83f87d11b27d296c5767e1d5161429. 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/FR96X2438709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c617696dffa5f4a0d3a84e3d5c0830c871a6def1a4ba967014236c48f7e9fab. 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/FR2X42435291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3330fd86b069c4e3511797f393012c6f90137e51ff4b4eb79f6dcc7d5c2f31. 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/DGA0L2359943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8cba492ef182e13745844b80eb7bcdbe982615df8091831972aaa35ff36da8. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DGA092319398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb780452fdebe50090d4b3fbf836ad446c46017b44fc497764ad755e18594b725. 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/FRX872360691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7956c846cde1c1d74fc065c38447030adf0b1bda98001ab33a4503ba8d5b44ef. 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/FRX762382717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1765b6f94452208ca160f79a290cca643c2163c9d97909d03412f318dd938a44. 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/DGA092213966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393024653587417b543a0ab0861f611e610b6949a5ae059c359a1b9ee360daf0. 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/DGA062267740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff682acd30e3eb4b4fc5de06a6fff82e6b3c32c0cec43d14584b8ba750055863. 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/DGA062268790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3d14e89333ee26497b0b9101e66ad01c436fe6c5f32a23debcfdff6187416f. 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/FRX202267449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6e22750615d559b992499b301afc0b95cdd51230e79528bd474f8c0800eb92. 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/FRX202232259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68ff2ca946c774fecefe954451b781a9a7613db5846f28ec90ffc56a8579ad9. 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/FR10S2292576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1677943f3bce83b234a841b3b26d88cb67879c52db453a1adbe83a39df8b81. 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/QZFZ72209714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcf4264b874d45a7ffb3e5c235f88cdcfd1a17c0060fa2edcc578b30413c16f. 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/FRX872151593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f25773f785d554a20a52dbb389a97dc0907dc034ebc7f338623b7d23ec3e98. 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/FRX872130635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d7a99d4a1b9bfe8356285bc0cbe62e633fa7029991bc067bd1a039f0c665cf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA072150347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb100412cf0718c79bf7efee11adb276efb8cb7c85a67acffaf280b9db379e7. 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/FRX872053563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8e27ac6063d86f527c3dca0833945e45a628375bb495bf7d07a76a7f97a824. 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/QZHN62010926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c8a2762c76a08b6200367e92aae635deac7f7819cac48fbc733d83f25b7cb2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX201994561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f62ffbdc9de0c38eeb6104e46bee3ea0b915f7ff76646b2e56537e27ec5ddf. 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/FRX201996857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70be66266f8b21f530390f354307ca4cf45a90c8ee2212dd169e4f4f82308f46. 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/FRX201921081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1397a295772bbae72120410a3f1c21c0d3abf6118b82f3e85d2c62e96dc85f9. 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/FRX201914106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cca99df80f0d546c532308a9731d9b23c3c9cd3a1c426f96082593f3c1e568. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAHQJ2378678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d9441e6955499760aa93e2c8d4b8ca99cf2bfd1540f40859d74037d5a00b48. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAHQJ2378679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989323b6cb8ca00b00d5dfbbe50be972832a06a754208cc1651509255261cfd2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAHQJ2378684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65236018a74e00b046b964ad87338ca1d14684f673b3048c08298b98436b5cf. 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/CAHQJ2378685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42f27580055382a9000c83dfe5b4933f305033dac6dd48f7cf484321f1ba7b3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAHQJ2378682.