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 0x3d8b01044555e6b6826c7dd52a6e6219fddfc310c367526552e9fbe37ca566c5. 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/9a796dff-8eaf-475b-8cb7-4a5ee7aaa553.json and https://artists.proofprofile.net/proofs/artist/9a796dff-8eaf-475b-8cb7-4a5ee7aaa553.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 0x826e7aeb9c2a88f3cb09536e1b240b5069c68e096c864780594a2d3c70be9618. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:10:48Z), 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/DEYX82161578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4d49dbf078680dbd8656db4b7f4f81bc15c406864fb3139b3ae4061854df6f. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/DEYX82161581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc236a8b4a83ada3dff1a1a92fe0bb28e83ea965a9e9a3e0f8382d8621d8ce1aa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEYX82161583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e6a6138e069bd0980e097b57e975c24636e09f52aff0842de08420c00ae446. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DEYX82161575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c191867f4e12326cc07e8b84c257fddb0fe68e87f2179cce2e65246ecb0d950. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:14Z), 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/DEYX82161576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93152037968187b2d22c41242a94d1e92e7ad896376a1c7b035b618021679534. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEYX82161584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9781494fd3aa773a40e3c357ae7f7c255cf8528d77dc33a5efd6955fec9a96a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:24:08Z), 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/DEYX82166972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae6bd90b7b0fb73a5e240c7267497164e9b66c0cc1cdb785df90851a8d6c117. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEYX82166964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b354f8495dd6ef856886aac707cb67e0696ba19d0b8f5be6490b9940c30530. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/DEYX82166966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25172d57005ce62ef961fb0504946af6b358e4c36943853f7e71c86e2ca81a6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEYX82166965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41da95ab4fd7871762bcdb367f8f5966382b09e13ea31a80eb359488caf3c8f2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEYX82166971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8bf8734501ef00557bded26f7afde91b6b351d9f7cef8c65a1004a66a0df3a. 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/DEYX82188609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606e030cf368cb550dfed3ed5ff6c4e5a095804d8474fe66bc39156dea55f658. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:13Z), 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/DEYX82188613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463edab5dafad5c20f7457d2bdf277fbe9e8e5fd15d53491a6bf473e7bb34850. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEYX82188621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e5394b3589d2fa60e454d9e21424da0dac08c2ab4d6e4b394fe53897aa4d34. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEYX82188614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f76a86db10ba1c958b2ac50b85a12cf57d85785e1f472ac10ae2b11b892257. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEYX82188608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8618084262d38a6738e420cf43b861a2451896c3d5db7fc86550a0978520a2. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DEYX82188604.