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 0x512b0a7fc3684424aa10479c4cca299cbbc6dd4efd270ce1542edead65d9c7c9. 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/b489afcf-e19e-4b0e-ac07-2e246c8617c4.json and https://artists.proofprofile.net/proofs/artist/b489afcf-e19e-4b0e-ac07-2e246c8617c4.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 0x4effa07b838df0d24a9d7d224ad24d745039271eb83876d69784563d6be4d4db. 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/QZRD92304279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6795e1a83570aad7f2c91310b7d8c2404b8ee8866af8974d1f244b8190e4220a. 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/QZRD92304303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e35eef913f4ea6478b45093a46065b972980ca83ea0af191186ddfe26e6ac18. 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/QZRD92304304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f75bfc527f5b52c69774a7c6450a94cfa4b50a4555ca087a9ce64eb4f73543b. 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/QZRD92304280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864fc356a98af095ef4d5976b2a9f402c935ea41b4d4e5334c7fb5bfda2c079b. 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/QZRD92304283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca63a75b89e6f994d5bf3d8c05b75a7d5d878503f420afcfeb5bf2e06eb33f52. 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/QZRD92304284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d03f4a0dcd107d7a45e3a56751caa78ff77a0380149d627a97ddb6bda9072e. 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/QZRD92304285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ce3e4940c799008927977d19714b105de44ad709a63a94de023a46574774c3. 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/QZRD92304286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709fc1a2cb139c80a4cd79cf2700af0705aa40f666822230f927521bbd411c53. 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/QZRD92304289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669c29d9155a4a9d319446081ba481f7760b3c53e67b9f003fea35cfb9a295dc. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:27:36Z), 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/QZRD92304287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f4672995bd3bff43c3cc4100b2f49ff326648b0e6059aab1b71e2a915d69e8. 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/QZRD92405249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591451d19819590cab4aaaa4633765cc603cd001b034a4928f3e9b9a297bf67b. 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/QZRD92405252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a0d57324d040756e6bd5e8ed144d5790816791800807f9f105fd3f48b51e4d. 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/QZRD92405288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34911fba1ce3aea9703b63cf8420f14e05dc94cbefc7c00738aeaedd8e615672. 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/QZRD92404733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb6798ddf750204df79eb114c701845252e8c4c5d22018e14e8e29c60a8a60f. 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/QZRD92404734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4e48031de8d88f12cadcbd0740e8e08258e7f541a1205325f0c7211c87019e. 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/QZRD92404694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41ebcaea6b254fbf0ae58f61c6e863c9e50374cff90648649f30a29dee67a4f. 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/QZRD92404736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff009b505529d600fd6d2967aa0d681747a85709121c7bbfc155357acd510d49. 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/QZRD92404737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60975eb6d58a9a13a12400c87f87cb09d15df91f15c7a5fe53b7961934eed84a. 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/QZRD92404741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726e06851c00e11d86f37cb8f70b963c0374bd3f75002cb184a72fc3904a04b0. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZRD92404742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78de73748ba661c5b3944d632cd6a3bca247100998fb443ebed1cae1c5760baf. 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/QZRD92404550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec6f5e4b0518587329d2907ba63349a0e3ced36f7018b43b5dd808ae783c524. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZRD92404735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf0f5834cfc009fa5efab2f65e2010169b18bd76c6dee0f820c5c779f631f70. 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/USJ3V2197204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc641a7658a83ab3f8998dea06720b6d2e95711822cfce167d93679a067209c25. 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/USJ3V2197205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5c7af0c5b28bafb8142c011480b79059b54909557fe25b762201369512446d. 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/USJ3V2197206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb04f49beff1fe0382535dc953203f8d54e5618e5abaaa75693287ca4505c10. 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/USJ3V2197207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3b430903dad04e6caab1e7596e770729bed8363dda97a5bb67ee80b379f3f8. 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/USJ3V2197211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ade6f11c26775db9914f63070f8fa1184e076a9454ed27421f4c55d1e44fa5. 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/USJ3V1493062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea83539992188198c10931cafcc4344d7684077e248dc81c0a1ccf50318549f9. 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/USJ3V1493915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c3748f3a96515722c2b71b1bf74f62c12136885a9ab22a4b2b5d70e8c0d1c4. 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/USJ3V1493914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d77d2b83d8826a036118f56458ea7f70414407f47000dc4a8e7a690ed86d520. 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/USJ3V1895093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6b65e9d2420e1e57142e5e385a27992094090a010bb4c68848f65a5d36a5ac. 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/USJ3V1895100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbff60555dc004a0505de3b803a59158a22ae25cab03067e75d4336cc85b209. 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/USJ3V1895102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f4672995bd3bff43c3cc4100b2f49ff326648b0e6059aab1b71e2a915d69e8. 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/QZRD92405249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4e48031de8d88f12cadcbd0740e8e08258e7f541a1205325f0c7211c87019e. 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/QZRD92404694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78de73748ba661c5b3944d632cd6a3bca247100998fb443ebed1cae1c5760baf. 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/QZRD92404550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffdbf08c138c87a80f305dc391df6faec49d70084e1a70f5326e5aef248821a. 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/QZRD92303859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab209a44771efbdb5ad0ae1ad12570f8a401872ecd973a3c5d993c2a43a71c4c. 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/USJ3V2139232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5278025f5b0dd00817f1ffdc305c1eea86a3e4cc94ce8bcd526efb40679a65. 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/USUYG1535260.