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 0x6e6cc3e3fe03ccd7b5f13d18ef96ee34b1fa150b6c66cc4d09e5ebe6a0f7cf40. 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/79ec5c5d-992b-4e4d-8d9c-49eeb7b52b08.json and https://artists.proofprofile.net/proofs/artist/79ec5c5d-992b-4e4d-8d9c-49eeb7b52b08.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 0x826ebd9bcbbbd936c8856aebf492fdfaac678e721bc4134d6ef42a0e26a7ae03. 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/BR4VT1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bf33dd70c51f1ebba440f1f34b8fb15d9dafe57c2ebf010b1b432cb7667900. 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/BR4VT1100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb93df82c06c3c001ff662173ef6833ee874a2c093fde454e599ba3f45e91108. 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/BR4VT1100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509bb935f3245c6a772bd1b2e518d24946f624c3fcd5af4aa48e126540355c5d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BR4VT1100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c13ea09b549bacfb7039161d02a267e0df252952416f96217bec407297ad5e. 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/BR4VT1100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ea2da6a2e1cff7fcc7e992c8751c99a9168fc6fd6102401aafe3f8ed0fc4af. 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/BR4VT1100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe322f078f393022abfbc57650c6ecdd5e33aa13976988b8b191172815e645142. 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/BR4VT1100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7f11f28e41f3592740ce41e38515ea85b5b9d4370b4bb4acce0e87c6dd80ea. 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/BR4VT1100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec21eb9875315bcc1920ac1a45f03bf6e01deea2199ccb2e83bc2723ef4ac84. 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/BR4VT1100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0def0faf7a0fe25926caea441060e12e647d4f96745796aca0aef2d91dbe8b9. 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/BR4VT1100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ed99348818e483b3daaaff1a77b747234fbdc7446c900b5c9724491abc286c. 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/BR4VT1100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc102be119887da8e548ecf9515156dcdb0bad6255bed4f3484557bf076b5cbd6. 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/BRPC21000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82195863dbee271e817e61e7141298381c42d4328b83ebef9d97508f33612615. 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/BRPC21000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e660d87924e8df5be99cee5a77858a8a58e1de10185a0b3157d2c6a43f1fa66. 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/BRPC21000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6c69cd858c5b13981a092f3116ddca06d4ba0c31569bc0a94b3621e28f0eea. 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/BRPC21000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92eb52bbcfeda1be5016f709f720e18079c1c3cc4dcc9d1c37138253dedd629. 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/BRPC21000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135661e7b0f9498ffdc6c504ddc6bca9eecb122d1ec6bbbb622c5437ee313442. 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/BRPC21000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86df82ec16db039fce5d5b3ba288255101cddaf64ad4b08f2919583e567cfe57. 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/BRPC21000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0015356b53a505cc53205ef5e98e6cbf60d85dcc919d626daed4f182b5c35a6b. 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/BRPC21000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d799e177af3a28627a3eb7ed104fe0e65e857ddf62bf6fb212d89ae168c46be. 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/BRPC21000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce7564c741b48bdd0d94eaddbb72f5912a99f1f0b962b4599eefe580fa06744. 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/BRPC21000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21169b15f2df64c0f658cf00ebdd6a529dc964a67b2b9a25884953199cd12fc. 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/BRPC21000025.