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 0xee4c912e24c978807d6b43d65eb89e64bf7f6ae1a740f0e93ec7bc9bab9a72a9. 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/40650eee-1a64-4fd5-877f-aca262e099ae.json and https://artists.proofprofile.net/proofs/artist/40650eee-1a64-4fd5-877f-aca262e099ae.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 0xa4063cdcabe831a1daac31c760f37a2f1c855f1491d69ad8971c757ee0f65169. 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/DGA0L2361881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5676dd2100b940b1be99757265de824562ddeb78113e0296dfebd311bbc9a092. 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/DGA092224046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bfe4fea2a1f9b8d4d7f324271031f1d5d738a0983f7c9f9e67cebf2dfa67f5. 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/QZW9M2249960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1b896ebc6ebf23a3d43880b1e3be07cedd65ed1a85b2deed9f5e2f7b788d37. 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/USQX92005787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ec4841c1ed679c4fdd9c9328fb30961c50cbfd91d70f9d0aa9a9d154791772. 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/USWB12003886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301684e92266889ecf823e56a25de2dd2efc7ab1da9e9c47023aa6685b3bfc7e. 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/USWB12004429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621521c850bd99fd97559e2afb942ea54050611451045ee182ce5e3697101d86. 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/USWB12004430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301684e92266889ecf823e56a25de2dd2efc7ab1da9e9c47023aa6685b3bfc7e. 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/USWB12004429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ec4841c1ed679c4fdd9c9328fb30961c50cbfd91d70f9d0aa9a9d154791772. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USWB12003886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ec4841c1ed679c4fdd9c9328fb30961c50cbfd91d70f9d0aa9a9d154791772. 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/USWB12003886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd35a3f08cc87f8e2f6799035679f59416bac71dd5bee003398c9154a91afba. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USWB12001035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3b911cc958ddfcf22a4c690ceac9ba8b2dd9d6bfd8b8f3bfab29fb31e47202. 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/USWB12002128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a17754a1bd035d2b2d30b02aac87cae7cbe328472ae8a51925e68637449545. 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/USWB12001783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3297d69318418768137ddfecd59fde1b17c260c3d81df37365f17264a578a2. 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/USWB12002189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3289de8448b83369c2b183300371760cf0c0066ca454b4f610c048399efd91d. 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/USWB12002190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3b911cc958ddfcf22a4c690ceac9ba8b2dd9d6bfd8b8f3bfab29fb31e47202. 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/USWB12002128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a17754a1bd035d2b2d30b02aac87cae7cbe328472ae8a51925e68637449545. 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/USWB12001783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd35a3f08cc87f8e2f6799035679f59416bac71dd5bee003398c9154a91afba. 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/USWB12001035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa457a30cbc308fdc0424e14c702c43e4f774d029e72608de9a4d5dd9bcb1567d. 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/USWB12000595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc78313573fa3d1a146b8479532e18e00ec2e7803e4553f3c80f2389d878a51f. 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/USWB12000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc78313573fa3d1a146b8479532e18e00ec2e7803e4553f3c80f2389d878a51f. 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/USWB12000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e9292e03e0d35d4815adf921723b90c0741f2bc99b2747db71708217413a56. 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/USWB12000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e8303911240e59af817afc2668696b55773838511b47c6a4e749005c954d46. 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/USWB12000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0692009d1d0d228ecd714f7e96855c3acc37df57078ea3e9285dfc85c22170c. 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/USWB12000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ca8cf90ae4e662e56f7eedc24e4a58847e2230b611a7cf841645c923ed4cf9. 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/USWB11903117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe522023ae1947d9b0dfee7b3850705f48a33ba802b1caece6dc0be87a8f95970. 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/USWB11903118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d9189e56eda81062b1674541a9d7f97b3cc55e7a8229837e7327e959d12fbc. 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/USWB11903115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7275078fb3bb29f7520b7066e59e971442b6ac3443f05ec64be245c4b14960e. 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/USWB11903119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b4381c05181c8b94a7ec077c9c7173691589b42018a03db0de1384dabd951b. 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/USWB11903116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d92e6502f5a344b5ce7a8d70ab7d07ad278ec6bae83eba3f7c522d93290823a. 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/USWB11902413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1810dea28df178ed8ff459ee48bd6e34dc380226403c4dc3985b10a5386b97e. 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/USWB11902187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6756c2dfba953f78300f06732941432eb4bb61fdce49fd556a35ff5244e338b2. 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/SE5VF1900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acd04229796927480a07556cae57891c531909f10c7f74a3e91da7c6175544a. 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/SE5VF1900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b7bc7e0d02271d6e9434429335370fadcc59959cf87b465057635e4412f2ea. 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/TCADY1834857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f460e99b15e427e1648c59bcf22962a004469a7bd5beaf9cf213fe88b33f12e. 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/TCADX1810407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fc4ab4d42594a7b30aefaaf7020b164bce8bad6967e922789b6c258f82bef1. 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/DEN061800734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6097f8b4057c8d03c48a29f22f80acca9950347fe4799bcffd36d8e3ce9f86b9. 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/TCADT1879734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bbaa2f58a9f217cf0dce19af29a61b48a18f0485665267e31f77a2f8c5fe57. 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/TCADQ1822144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8785f7780b03dd10b0002fd720a8ad00eef1ff449a784834ba51d6a1c7de9386. 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/TCADQ1822497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ae28e8fd0fc67d96d3413572890eac1488cd0364ccc7ed616245bfb2ea2597. 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/TCADQ1822748.