1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4ab5e503560a8b357154ec49498836414344b5e95f7824a8d69a8db2ee2fc37c. 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/92ab3b22-04b7-4b4e-9646-4fb40229c6c5.json and https://artists.proofprofile.net/proofs/artist/92ab3b22-04b7-4b4e-9646-4fb40229c6c5.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 → block OTSBitcoinBlock must exist at that height 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 0xe5ae15193fb7cdeebe183f56fe2919f5323d76bbcb5abe23bf7ebcf355d63edb. 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/FR9W11603090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a78f2169bff4972301801b949991921bae814c93c9278166a43cd5205c9fa5. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FRV961800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7397f82707286c0d8216a907d83e7ad9a44206371d47d08c38908425096df243. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/FRV961800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285a071543b8b3543064d54465157220cc3995bb4bebe821af1271b5d2d5162f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRV961800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d72fd9740a3c992b7247b0ae192b3a33c65ec6ccac650f8d7c238c36b286c8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FRV961800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc868364cca8002ec532d56413fa562cc7e5f1ceb7ad91d7e0202203fff305b89. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRV961800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2744abee4aeecd464266b049e52fc698ea6b0ac16d562593b16b879125cf686. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRV961800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587d8db91057b3bdbdf3631417c2e1ddbf061fbe0ff9ae5ee60bf828a5a89b60. 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/FR6Z01901102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21b1804dd23192359641f8d2feffd65f395d7f028b2fa08a3879f78f2251636. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRV962400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ddb90088f5d5e3fb472a78b8c48f918feabb0db651c9affeaf9c906e908588. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:44Z), 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/FRV962400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e4650ac3cadaa295764b4a033def697a97458d7d2bb9c412e3df735423e986. 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/FRV962400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fec0f7756bbc40d5b6ee4d813cf837f98b965d89a42c75745c65afe963faecb. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:23Z), 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/FRV962400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb701746f46a34cecd9911034d21e3aad26e7cdca0651898ab1abef42b717747f. 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/FRV962400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ddb90088f5d5e3fb472a78b8c48f918feabb0db651c9affeaf9c906e908588. 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/FRV962400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7d16f5f4b5be4669edfa2ddb8d9fa96ffc3447b3c3c8ee776893b60115a249. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:27:18Z), 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/FRV962400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa551af262f8b142cc1f8f8b6351b43b80391fdfd3909b880b892539a3942ad6d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRV962400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ae15193fb7cdeebe183f56fe2919f5323d76bbcb5abe23bf7ebcf355d63edb. 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/FR9W11603090.